"the alphabet," late 13c., abece. Sense "rudiments or fundamentals (of a subject)" is from late 14c. From 1944 (in a "Billboard" headline) as a shortening of American Broadcasting Company. Related: ABCs.
实用例句
1. The angles are equal, for ABC is equilateral.
三角相等, 因为三角形ABC是等边三角形.
来自《简明英汉词典》
2. Do you know your ABC?
你认识所有的字母吗？
来自《权威词典》
3. a roving reporter for ABC news
美国广播公司的流动新闻记者
来自《权威词典》
4. If you want to acquire profound knowledge, you must start from the ABC.
要想造就高深的学问, 就得从基础学起.
来自《简明英汉词典》
5. Making a simple dress out of cotton cloth is easy as ABC.