谁知道on the ball的意思?In class you must stay on the ball.

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谁知道on the ball的意思?In class you must stay on the ball.
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谁知道on the ball的意思?In class you must stay on the ball.
谁知道on the ball的意思?
In class you must stay on the ball.

谁知道on the ball的意思?In class you must stay on the ball.
on the ball的原意是用于一种计时装置.下面有图.
http://www.worldwidewords.org/qa/qa-ont5.htm
那球会随着时间而上下移动,用来计时的.
为啥on the ball演变成保持警惕的意思.应该是源自keep one's eyes on the ball,即盯住这计时的球.后来演化成“盯紧点啊!”.
这就是on the ball的由来,有趣不?

在舞会上

勤奋，机灵，留心，有见识

bu renshi

on the ball: vi. 警惕(知情)
Examples:
1. The great value of Jack as a committee man is that he is always on the ball.
作为一名委员，杰克的巨大作用是始终保持警惕。
2. The new publicity manager is really on t...

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on the ball: vi. 警惕(知情)
Examples:
1. The great value of Jack as a committee man is that he is always on the ball.
作为一名委员，杰克的巨大作用是始终保持警惕。
2. The new publicity manager is really on the ball.
新的宣传部主任确实很内行.
3. If you don't get on the ball and start studying harder, you're going to flunk.
如果你不积极进取，更加努力学习，你就会考不及格的。
4. The new clerk is really on the ball. He's already improved the filling system in the office.
新来的办事员真能干，他已经改进了办公室文件归档的方法。

In class you must stay on the ball.:在班上，你必须积极进取／很能干．

收起

1、在球上
2、在舞会上
3、在睾丸上
4、机警, 高明, 敏锐的

谁知道on the ball的意思?In class you must stay on the ball. “on the ball的意思是什么 he puts the ball in the net.的汉语意思 The ball on the _____ 划线处填与ball后三个字母读音相同的单词,意思要通顺. hit sb on the nose和on sb's nose 的区别?有谁知道the ball hit the boy ____ nose.A.on the B.on his on-the-ball be on the ball stay on the ball~ he puts the ball in the net.这句话的汉语意思 He often plays beach ball on the beach in summer.划plays beach ball提问 美国谚语the ball is on your side啥意思 And the ball is round.的意思 the ball is down的意思 you run a lot and kick the ball in this game 的中文意思以及谜底 in this game you hit the ball 的中文意思以及谜底 game popular in the USA,played with a bat and ball的意思 catch the ball意思 The ball went in the d___ of the man sitting in a boat on the river.