This could not be otherwise; and from the slowness of a vibration, or from the small number of vibrations in a day, Cavendish computed the real weight of the earth.

就是用这样的办法，通过观察这缓慢的振动和计算一天中的振动次数，卡文迪什计算出了地球的确切的重量。

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So-called haptic feedback allows the user to sense, by way of a small vibration, that an icon has been activated -- avoiding the distraction of looking away to make sure a selection has been made.

所谓的“触感回馈”功能可以发出一次小小的震动，告诉用户该图标已被激活，这样一来用户就不必一直盯着屏幕，以确保已经选中了某个图标。

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In a small space, this lets your ears catch a lot of those song vibration.

在一个小空间里，这就会让你的耳朵听到许多声音的振动。

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