为避免引起不必要的注意，他把声音压低了。
To avoid attracting unwelcome attention he kept his voice down.
胡珀把声音压低到耳语。
如果内置扬声器不是装备在机器的背面，这个功能会更加出色。 因为当你屏幕向上把Kindle放在平坦的表面上时，声音会被压低。
The feature would be even better if the built-in speakers weren’t on the back of the device, muffling the sound if you place it screen up on a flat surface.
如果内置扬声器不是装备在机器的背面，这个功能会更加出色。 因为当你屏幕向上把Kindle放在平坦的表面上时，声音会被压低。
The feature would be even better if the built-in speakers weren’t on the back of the device, muffling the sound if you place it screen up on a flat surface.
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