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What does replacement mean?
Substitution refers to replacing or quoting an element with other elements in the compound.

Pinyin Hu zhian

The basic meaning of substitution, Chinese vocabulary, means to replace or refer to one element replacing other elements in a compound. Used in chemistry, business and mathematics.

The origin of A Dream of Red Mansions is the 46th time: "You make fun of it the other way around."

For example, Guo Moruo's Ode to the Nine Muses: "It should not be difficult to print all 10,000 copies if the object is changed to the people, like comic books sold on the street."

Grammatical word formation is subject-predicate type; Usually used as the subject of a sentence.

Substitution of synonyms for the original (working people, clothes, etc.). ); Reverse Mao Dun's Miscellaneous Notes on Escape: "I don't have a second pair of pants, so I don't have to change them day and night."

Substitution sentence making

1. In this chemical reaction, elements are replaced.

In this project, they replaced the old materials with new ones.

We must replace a damaged part to get the machine running again.

Our headmaster has just replaced the old desk and introduced some new educational technologies.

The team has replaced the outdated strategy with new strategy.

We need to replace this outdated equipment because it doesn't work properly.

In this plan, they replaced all the old furniture and repainted the whole room.

Before the game, he changed a jersey.

They replaced all the old equipment and upgraded all the software.

10, we must replace some broken toys for our children.