At a high temperature the random molecular motion is more vigorous than at a low temperature.

分子的无规律运动在高温时比在低温时更激烈.

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The energy , dissipated in this way, will finally appear as energy of molecular motion or heat.

以这种方式损失的能量最终表现为分子的动能或热能.

辞典例句

It is this molecular motion that we call heat.

就是这种分子运动我们称之为热.

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Cold quells molecular motion.

寒冷抑制了分子的运动.

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