on the ball

• 有准备； 有把握； 警惕的； 能干的

词汇搭配

• get on the ball 快点
• have a lot on the ball 聪明(有办法)...
• keep one's eye on the ball 警惕
• have something on the ball 聪明(有办法)...
• catch the ball on the bound 及时抓住机会...
• be on the ball 机灵的; 机警的; ...
• on the ball 有准备
• have nothing on the ball <美口>毫无本事...
• stay on the ball 注意