1. Natural number in mathematical sense.
1, the number "2" is the smallest prime number (also called prime number) and the only even prime number.
2. The number "2" is a natural number, and it is also a positive integer, even number, rational number, even number and Hegna number.
Second, it belongs to the network language.
The homonym of 1 and 2 is "love". For example, 520 means I love you.
2. The word "2" in the text means that a person's brain is stupid, stupid and slow. For example: second-rate, second-rate, second-rate and so on. It is derogatory to strangers; If you say something to a very familiar person, it is not derogatory, just joking or speechless about his behavior; It will also be used to laugh at yourself.
2 in literature:
2 has existed since ancient times, and 2' s culture came into being with the development of human history. In ancient China, the army needed two things: symbols and orders. Scholars can't give lectures without 2. No one has ever 1 given himself a lecture or asked himself a question, and no scholar has ever asked himself a question. A king needs two things to govern a country. He heard about it at court and made an in-depth investigation. In a word, 2 plays a great role in China literature.
Since Pangu, two men and women have been created. From Qin Shihuang's unification of the six countries, separation and integration, people have two thoughts. With the establishment of 1949 new China, history has changed, and people have two concepts: old and new.