adv.机灵；留心；有见识；勤奋

机警，高明

on the bash───喝得兴高采烈，狂饮；寻欢作乐

on the nail───当场；立刻

be on the ball───提高警惕；全神贯注；机灵

drop the ball───掉了球；失球；犯错误

on the barrel───以现金；现付的

by the balls───靠球

on the brain───念念不忘；着迷

on the panel───在小组中；受审中；在面板上

on the rails───正常进行；在正常轨道上

She was no chicken perhaps, but she was on the ball.───也许她并不是个胆怯的人, 不过她一直是在保持着警惕.

Stanley had more on the ball than Brown.───史坦利的脑筋要比布朗灵得多了.

The golden rule in tennis is to keep your eye on the ball.───打好网球的重要原则是眼要紧盯着球。

He will do well in that work because he has a lot on the ball.───他会做好这件事,因为他很有一手.

One of them called to him, " How about getting on the ball and giving us some light? "───有个人冲着他大声说: “ 嗨,快点儿好不好,你总得让我们有个灯火 吧 ? ”

That new teacher is really on the ball.───那位新老师确实出色.

Swivel on the back foot, throw your hips , and keep your eye on the ball.───后腿转动, 髋部前倾, 双眼注视来球.

He threw it back again, putting a slight spin on the ball.───他把球略带旋转地又投掷了回去。

If you're on the ball, the sky's the limit! What do you say?───要是你能干, 就前途无量! 你觉得 怎么样 ?

new publicity manager is really on the ball.───宣传部经理的确精明干练。

Molly ripped out new yarn and wound it on the ball.───莫莉抽出一根新线头,绕在绒球上.

She really is on the ball; she's bought houses at auctions so she knows what she's doing.───她很精明干练；她通过拍卖购过房，所以知道自己在做什么。

You can trust him; he's got a lot on the ball.───你可以相信他, 他很有本领.

I always keep my eyes on the ball and forget everything else.───我总是盯住那个球而忘了所有其他的事情.

That banker is really on the ball.───那位银行家的确很在行.

You've got too much on the ball to worry about.───你这么精明强干,有什么可担心的.

She puts a lot of spin on the ball.───她打出的球旋转得很厉害。

This young man is on the ball: a good student and a good athlete.───这年轻人聪明又勤奋: 是一位好学生也是一位好运动员.

That guy is really on the ball.