愉悅口語:第309期 機智英文怎麼說

講解文本：

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on the ball 機靈，聰明能幹，機智
The new clerk is really on the ball. Everyone likes him
新來的職員真能幹，大家都喜歡他。
You can trust Jack. He has a lot on the ball.
你可以相信他，他很有一套。

瘋狂練習吧！