A, a
noun uk/eɪ/ us/eɪ/ As, A's or a's
(LETTER)
[ C or U ](英语字母表的第一个字母)
the first letter of the English alphabet
(MUSIC)
[ C or U ]A音
a note in Western music
This concerto is in the key of A major. 这支协奏曲是 A 大调。
(MARK)
[ C or U ](学业成绩)A,优,甲
a mark in an exam or for a piece of work that shows that your work is considered excellent
Sophie got an A for English. 苏菲英语得了个 A。
She got straight As (= all her marks were As) in her final exams. 她期末考试各科成绩均为 A。
Jim is a straight-A student (= all his marks are A). 吉姆是个全优生。
Idioms
from A to Bidiom 从一地到另一地
from one place to another
Using this software, a driver can now figure out the quickest route from A to B. 通过使用这种软件,司机现在可以找出两地间最便捷的路线。
from A to Zidiom 从头到尾;彻底地;完全
including everything
This book tells the story of her life from A to Z. 本书讲述了她的整个人生历程。