on the ball

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8 部电影说过 · Dr. Strangelove or: How I Learned to Stop Worrying and Love the Bomb
No, I don't, sir. Let's see if we can stay on the ball.
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    on the ball 是什么意思、怎么用 · 8 部电影原声 · 出自电影 Dr. Strangelove or: How I Learned to Stop Worrying and Love the Bomb (1964)