When it cried, she rocked it back and forth and gave it little comforting pats.

当它哭的时候，她会前后摇动，轻拍安抚它。

youdao

He tried to calm the screaming baby by rocking it back and forth.

他将宝宝前后摇动为的是使尖叫的他平静下来。

youdao

The team carefully measured the star's subtle wobbles as the planets tugged it back and forth.

该队科学家仔细地研究了行星的振震动，测得了其振幅。

youdao

Or,he or she can place the hot glass on a metal table called a marver to shape the form by rolling it back and forth.

VOA: special.2009.09.16

So you can imagine a bead with a wire going through it and the bead can only slide back and forth.

你可以想象一个穿在绳子上的珠子,小珠只能前后滑动

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It comes back and forth in his memoirs too. In Speak, Memory that word appears. It's interesting.

这也在他的回忆录里反复提到，可以说，记忆那些文字再现，非常有趣。

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And people were just making a lot of money, trading it back and forth, in and out.

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"Every once in a while you take it out and throw it back and forth, " he says.

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She placed her fingertip on the dashboard and rubbed it back and forth.

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