bounce up and down

Tell the children not to bounce up and down on the bed.

告诉孩子们别在床上蹦跳.

I rode him like a pro the other just stood and watched me bounce up and down on his stiff hard cock.

i骑上他像一个专业，其他只是站在，并观看了我反弹向上和向下对他的僵硬硬公鸡。

Nurse: Will you bounce up and down on your bed please, sir?

护士：先生，您能在床上跳几下吗？

Even though, the boy liked to bounce up and down.

尽管如此，男孩还是喜欢上下弹跳。

Without this shock-absorber action the piston could bounce up and down, causing erratic carburetor action and poor engine performance.

没有这个减振作用，活塞会上下窜动，引起化油器工作异常，导致发动性能变坏。

The vibrations can cause houses to slide off their foundations, and can make buildings contract, expand, shake from side to side, and bounce up and down.

震动会使房屋滑出它们的建筑，会使建筑物收缩、廓张，两边摇晃，和上下弹跳。

A raisin dropped in a glass of fresh champagne will bounce up and down continuously from the bottom of the glass to the top.

把葡萄干放在香槟酒中，葡萄干会在玻璃被里面上下浮动。

Medicine Patient: Why do you ask me to bounce up and down on my bed?

病人：为什么你让我在床上上下蹦跳呢？