The central meaning shared by these verbs is . to swing back and forth boldly and dramatically.

这些动词所共有的中心意思是。大胆而有戏剧性的前后摆动。

youdao

Like magic out of a Harry Potter novel, such a metal could contract on command, or swing back and forth like a pendulum.

像这种仿佛出自《哈利·波特》小说中的魔法一般的金属可以按照指令收缩，或者像钟摆那样前后摇摆。

youdao

The motor drives a gear at the top of the tail, causing the tail to swing back and forth, which propels the robot upward.

发动机带动机器人尾巴顶部的齿轮，引导尾巴前后摇摆，推动其上升。

youdao

And so it goes, cycle after cycle, as conditions swing back and forth from one extreme to the other.

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The double doors seemed to swing back and forth in the breeze.

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"I've seen the pendulum swing back and forth, and I hope that the successful mission will push it back in the direction of Mars exploration, " Hubbard said.

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