Then tie power chain or elastic line on the hook and bracket (or band) to form two identical rotated strengths, but in opposite direction, to help correct torsiversion.

在拉钩与托槽或带环上分别挂橡皮链或弹力线形成一组方向相反、力量相等的旋转力作用于扭转牙达到矫治。

youdao

That's amazing, you can get atoms to smash atoms and create a chain reaction and create power-- that's a pretty amazing invention.

很惊人，你可以利用原子去做加速粒子,并产生连锁反应，然后创造能量-,那是个十分惊人的发明。

耶鲁公开课 - 金融市场课程节选

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Even the simplest electric appliance, the desk lamp, generally has at least a power switch or chain.

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