I jumped on the wall to grab the attention of the crowd.

我跳上墙头以引起众人的注意。

《柯林斯英汉双解大词典》

I waited on his desktop, and when he touched the desk I jumped on his finger.

我在他的桌上等着，他一碰到桌子，我就跳到他的手指上。

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I jumped on my old bike and rattled home.

我跳上旧车，一路吱嘎声，匆忙骑回家。

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So, I jumped on it.

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So, as you can imagine, when I was contacted by the Department of Labor and asked if I would be a guest blogger on their disability.gov site I jumped at the chance.

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"I jumped the fence and saw the man on the ground, " the grandfather said of what he first saw.

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