on the ball
US /ɑn ðə bɔl/
UK /ɑn ðə bɔl/
1.
警觉的, 精明的, 反应迅速的
alert, attentive, and quick to understand and react to things
:
•
You need to be on the ball if you want to succeed in this competitive industry.
如果你想在这个竞争激烈的行业中取得成功，你需要保持警觉。
•
Our new manager is really on the ball; she quickly identified the problems.
我们的新经理真的很精明；她很快就发现了问题。