3．Ball這個(gè)詞人人都識(shí)，就是球的意思。但在口語里，還有三個(gè)其他的含義。

The little girl had a ball at school today. 這個(gè)小女孩今天在學(xué)校參加了一個(gè)舞會(huì)。

另外on the ball 的含義是，有知識(shí)，有才華，懂行，辦事利索。
　　He is a teacher who is really on the ball. 他是個(gè)了不起的老師。a manager who has a lot on the ball很懂行的經(jīng)理; a student who has nothing on the ball 學(xué)得一塌糊涂的學(xué)生
另一個(gè)說法表示一個(gè)人“能干”，可以說hot-shot：The boss would like to hire a hot-shot employee 能干的職員 a hot-shot teacher, 能干的老師，
Ball的第三個(gè)用法是having sex：They met, they clicked, they are having a ball.
I am glad you have started the ball rolling. 很高興你把這事推動(dòng)起來了。

來源:可可英語 http://www.ccdyzl.cn/kouyu/201008/112256.shtml