A, a
n
(pl A´s, a´s )
1 the first letter of the English alphabet 英语字母表的第一个字母
`Ann´ begins with (an) A/`A´. Ann一字以A字母开始.
2 (music 音) the sixth note in the scale of C major C大调音阶中的第六音或音符.
3 academic mark indicating the highest standard of work 学业成绩达最高标准的评价符号
get (an) A/`A´ in biology 生物(学科)得A.
4 (used to designate a range of standard paper sizes 用以标明一系列标准纸张的规格)
[attrib 作定语]
an A4 folder A4纸张大小的文件夹 即297 x 210 mm.
5 (idm 习语) A1 (infml 口) excellent; first rate 极好的; 头等的; 第一流的: an 7A1 5dinner 一顿美餐
I´m feeling A1, ie very well. 我身体好极了. from A to B from one place to another 从一处到另一处
I don´t care what a car looks like as long as it gets me from A to B. 我倒不在乎汽车的样子, 只要能把我从一处载到另一处就行了.
from A to Z from beginning to end; thoroughly 从头到尾; 彻底地
know a subject from A to Z 精通一科目.