| 释义 |
ABrE /eɪ/NAmE /eɪ/ noun (also a) (As, A's, a's BrE /eɪz/ NAmE /eɪz/ ) [C, U] the first letter of the English alphabet 英语字母表的第 1 个字母◆'Apple' begins with (an) A/'A'.apple 一词以字母 a 开头。A [C, U] (music 音乐) the 6th note in the scale of C major * A 音（C 大调音阶的第六级音） [C, U] the highest mark/grade that a student can get for a piece of work or course of study （学业成绩）第一等，优，甲◆She got (an) A in/for Biology.她生物科成绩得 A。◆He had straight A's (= nothing but A's) all through high school. 他读中学时成绩全部是 A。A [U] used to represent the first of two or more possibilities （表示两个或更多可能性中的）第一个◆Shall we go for plan A or plan B? 我们采用第一方案还是第二方案？A [U] used to represent a person, for example in an imagined situation or to hide their identity （代表一个假设的或不指名的人）甲◆Assume A knows B is guilty. 假定甲知道乙有罪。 ➡ see also A-frame, A level, A-road  ●from A to Bfrom one place to another 从一地到另一地◆For me a car is just a means of getting from A to B. 在我看来，汽车只不过是从一地到另一地的代步工具。●from A to Zincluding everything there is to know about sth 从头到尾；彻底地；完全◆He knew his subject from A to Z. 他通晓自己的学科。 ABrE /eɪ/NAmE /eɪ/ symbolused in Britain before a number to refer to a particular important road * A 级公路，干线公路（英国公路代号，后接数字）◆the A34 to Newbury 通往纽伯里的 A34 号（干线）公路used (but not in the US) before numbers which show standard metric sizes of paper （除美国外，用于数字前表示标准纸张尺寸）A…纸（尺寸）◆a sheet of A4 paper (= 297×210mm) 一张 A4 纸（= 297 毫米 × 210 毫米）◆A3 (= 420×297mm) A3 纸（= 420 毫米 × 297 毫米）◆A5 (= 210×148mm) A5 纸（= 210 毫米 × 148 毫米） ABrE /eɪ/NAmE /eɪ/ abbreviation () amp 安，安培（电流单位） |