Smokestacks are known to sway in the wind if they are not rigid enough.

如果烟囱没有足够的刚度；它就会在风中摇摆。

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The relation between language and its meaning is not rigid, unchangeable.

语言与其意义之间的联系不是固定的、 僵死的。

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A few strands of light brown hair strayed out, suggesting that, while conservative, she was not rigid.

头上夹杂的几缕淡棕色头发暗示了她言行保守但不刻板僵化。

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Even there, a horse is not really a rigid body, unless it's been dead for a long time.

马甚至都不是真正的刚体,除非是死了很长时间了

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So really, you can not ever rotate a double bond, it makes your molecule very rigid.

实际上，你不能转动一个双键，它使得你的分子很坚固。

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Its more successful mayors and state governors have been practical reformers not rigid ideologues.

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However, the creatures' wing membranes were not rigid or strong enough to support the device, and it also made them less aerodynamic.

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He could be insufferably priggish, but he was not rigid.

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