youdao

Basically you squat down until your thighs are parallel to the floor, then jump up as high as you can, and repeat. (Video.)

你完全是蹲着的，直到你的大腿与地板达到平行的角度，然后尽可能地往高跳，重复这个动作（视频）。

youdao

I tried to jump up, but I could not stir a limb, then I yelled aloud in a frenzy of fright.

我试图跳起来，可是我四肢动弹不得，然后我在惊骇中大声喊叫起来。

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We jump up to third, then fourth, then slip back down to sixth.

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