A.

美 [eɪ]英 [eɪ]
  • abbr.(=about)(=accepted)(=acre)

A.A.

A.

1.[c][u]英语字母表的第 1 个字母the first letter of the English alphabet

3.[c][u](学业成绩)第一等,优,甲the highest mark/grade that a student can get for a piece of work or course of study

4.[u](表示两个或更多可能性中的)第一个used to represent the first of two or more possibilities

5.[u](代表一个假设的或不指名的人)甲used to represent a person, for example in an imagined situation or to hide their identity

IDM

from A to B

从一地到另一地from one place to another

from A to Z

从头到尾;彻底地;完全including everything there is to know about sth

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