题目内容

双向作用筒式减振器在压缩和行程中均能起减振作用。

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My brother and I ____walking the family dog.

It is said that these sandstorms ____in the desert.

The coming public performance, her first one, will certainly ____the young singer ____.

Who is crazy enough to go swimming when there is a ____of ice on the lake?

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