A, the first letter in languages such as Latin and English, is also an indefinite article in English. This letter is used in many fields and has different meanings, such as electric current unit in physics, adenine in genetics, attack in games, fraud in network language and so on.

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The letter A may appear because of a symbol of a bull's head, like the development history of the ancient Egyptian hieroglyph A.

Characters did not appear in Sumerian characters very early-about 1500 BC in Sinai Peninsula. Around 1000 BC, this symbol was a specific linear form in Biblus (an ancient Mediterranean port city, located in Jubail, north of Beirut, Lebanon, and became a prosperous Phoenician city in the second millennium BC) and other parts of Phoenicia and the center of Canaan, for all linear forms. In semitic, this symbol is called aleph, which means cow. The Greeks didn't like aleph's pronunciation and blocked the glottis, so they used the vowel A as the symbol, and they changed aleph's name. They used several different ways to form this symbol, including the prototype of the English initials. The Romans applied this symbol to Latin and became the source of English composition. In the Greek handwritten form, the lowercase letters like the first English are similar to the capitalization of this English letter. Around the 4th century A.D., it was a projection of a specific annular rolled product, which was like English handwritten symbols and printed symbols. Why is A ranked first? Combined with the above, A looks like a bull's head upside down. Moreover, cattle have brought many uses to human beings in daily life. "For example, cows can give people arable land, beef and steak can be eaten, cowhide can be used as leather goods such as leather shoes, and horns can be used as grinding tools ... cows bring a lot of convenience to the British and Americans, so they put one first." —— Excerpted from the second volume of the fifth grade of the primary school English "Jin Sanlian". In addition, A also means the best in the grade, which is divided into A+, A and A-. Of course, this is because A ranks first.

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A(a) is the first letter in the Latin alphabet, which comes from the Greek letter A with /a/ and /a:/ in Latin. it can

From Etruscan and Greek (α, α) to Semitic? Lep (used to indicate glottal stops). The Greek name of this letter comes from Semitic and is famous in Hebrew. Latin and old English pronunciations /a/ and /a:/ are replaced by other vowels, such as [EI] and [? ], the last one was originally a combination of a and e? Express. In other languages, such as Italian, Spanish and German, A is basically the same as Latin. The Chinese phonetic letter A "A" corresponds to Chinese characters (Ah, Ya, Ah, Ha, Yi, Ju, Yan).

Capitalization: the meaning of.

Unit of current intensity: ampere. Phonetic names in music. Phonetic name: In music, the pitch with audio frequency of 440HZ is Phonetic Name A, and the volume name is la, which is the penultimate of the treble spectrum. Archie formation coefficient constant. Type a blood in blood group. The first option in the multiple-choice question. Representative grades: A+, a, A-. The train number in China indicates that the temporary passenger in the tube is ordinary express. Monetary unit now also uses a as monetary unit. For example, some people say that he won the lottery and won 1A, which means 10000. In addition, b means 1000 c and 100 letters a, which can also be translated into an indefinite article in English: a book. Represents an address label in HTML. On the Internet, A means fraud, cheating (I cheat you, I cheat you). In the game, A means attack. In financial management, A means amortization.

Lowercase: the meaning of

In the international system of units, A stands for atto (10- 18). In English grammar, a is the abbreviation of adjective. A is the prefix of Spanish. In Japanese, the Roman character A stands for Hiragana ぁ or Katakana ? to pronounce the Chinese character "ah".

other meaning

A is sometimes with Z, which also means "from beginning to end". In addition, A and B mean "starting point". In physics, "A" stands for absolute temperature, which is absolute temperature. In mathematics, A stands for the shorter right side of a right triangle, B is longer and C is the hypotenuse. In medicine, a stands for artery. In genetics, a stands for adenine or adenine ribonucleoside. In biochemistry, A stands for alanine (Ala). In the film industry, A stands for adult viewing level. In the US Air Force, A stands for attack aircraft. (That is, A stAnds for an, aha, Ao ... and other onomatopoeia words, that is, the voices made by the hero and heroine in the film, usually appear at the end of the film. In addition, foreign codes are popular now, and some people call them "pornography" because they know several English words-a, adults are also, or the United States, or American blockbusters. (A) In network language, it also means "ah". A also means "cheat" in network language. A also means unknown in mathematics.

The meaning of ACG

A A-Anime/Animation/animation/animation, animation is the first in ACG, and animation accounts for a large proportion in ACG. But because the three are so intertwined now, the problem of mutual proportion is ignored.

Meaning in some games and Warcraft.

The "A" here is the abbreviation of AOE, which means range attack spell. A, a drop, a gets meaning among gamers. Kill the specified monster, thing or enemy, seconds kill. For example, player 1 said to player 2, "Let that monster do A together", which means that player 2 will cooperate with player 1 to kill the specified monster. In some real-time strategy games such as Warcraft, A stands for attack, which means attack, and unit means attack on a unit. This command is usually completed by using the shortcut key A on the keyboard. A also means starting over. In the DOTA game of Warcraft, if someone quits, someone will say "A." (or AG) means to reopen. In modern network, A also refers to Sabi.

Edit this phonetic symbol

International phonetic symbol: [a] is a lip sound that is not round before opening. [..] is a lip sound that is not round after opening. [..] After opening, there is a mellow lip sound. [..] is a near-opening vowel.

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Character encoding ASCII Unicode EBCDIC. Capital A 65 004 1 193. Lowercase a 97 006 1 129.

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In modern written English, form is used before words that start with consonants, but it may be spelled (frog, university, euphemism). A formant is used before a word that begins with a vowel (an orange, an hour). Once upon a time, an was an acceptable alternative word (an one, united appeal) before words that started with consonants but were spelled with vowels, but this usage is completely out of date now. An was also a common variant before words beginning with h, in which the first syllable was not stressed; Therefore, the authors of18th century wrote history, not history. There is a phonetic reason for this usage, because in words such as historical and heritary, the first letter h is often omitted, which was basically abandoned in 19 th century and in the educated speech of1926 h.w. Today, it mainly exists before the word history; Few people mention hysterectomy or genetic characteristics. In formal writing, using phrases like historic opportunity is a harmless decoration.

General usage

In modern written language, words beginning with consonants are preceded by "A", but this word may be spelled as (frog, university, euphemism). The form of an is used before vowels (one orange, one hour). At one time, the form of "an" used before words with consonants but vowels was also recognized (an one, an united apparent), but this usage has now been abandoned. An used to be a common variant before the first syllable was unstressed and began with h; So/kloc-writers in the 0/8th century can use both a history and a history, but neither a history nor a history can be used. When h is used as the first letter in words such as historical heroes without pronunciation, this usage is reasonable in phonetics. This usage has been basically abandoned in elegant languages ending in 19. In 1926, H.W. Fowler also thinks that it is too pedantic to continue to use Ann before these words. Now this usage is mainly preserved and used before history; This is extremely rare before hysterectomy or genetic characteristics appear. In the formal written language, usage such as historic opportunity is also a decoration. In the chemical structure editing software such as MDL "Islamic State" Draw, A refers to a non-hydrogen atom, that is, any atom except H.

Special usage

A has two special uses in slang or spoken English (informal English, which often appears in lyrics or everyday spoken English, but not in dictionaries). 1. The abbreviation of infinitive to usually ends with a in spoken language, such as: wanna = want togoing = Will; Gotta = have to; Tryna= trying to wait. 2.a replaces the word "er" and often appears in the lyrics of some black rap, such as: playa = player rappa = Raper killer; Murda = murder, etc.

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A is a alternative rock band, 1995 was founded in Leeds, England. They released four albums, an EP and a live album.

A released their fourth album "Juvenile Dance Regulations" in 2005, and then disappeared for a while. However, as of 2008, the band announced that they had returned to the studio to start a new album and planned to release it the following year. The band named "A" was founded in Leeds, England in the early 1990s. The band consists of Jason, Adam and Giles Perry, and two good friends, mark chapman and Steve Swindon. QQ Flying Car uses A's Starbucks, Faraway and WDYCAI as the music background.

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A register name in the central processing unit of an eight-bit computer.

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Ayumi Hamasaki's tenth single includes Monochrome, It's Too Late, Trauma Ending Volume and Ayumi Hamasaki A.