所以即便新的Kindle每18个月体积减小了20%，价格降低20%，带来一些更好的阅读体验，这也不会帮助亚马逊打赢移动设备领域的硬仗。

So a new 20% smaller and cheaper Kindle every 18 months that brings a little better reading experience isn't going to cut it if Amazon wants to stay in the device game.

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这并不改变航行器的质量，但是减小了它的体积，这将降低它的浮力并使它慢慢下沉。

This does not change the craft's mass but decreases its volume, which lowers its buoyancy and makes it slowly sink.

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屋顶的形式减小了建筑的体积。

The form of the roof reduces the building's volume.

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