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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By many experiments, biologists have discovered that practically all animals have some sense of hearing or vibration.

通过许多试验，生物学家已经发现，实际上所有的动物都具有某种听觉或振动感。

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By direct observations and many experiments, biologists have discovered that practically all animals have some sense of hearing or vibration.

通过直接观察和许多试验，生物学家已经发现，实际上所有的动物都具有某种听觉或振动感。

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