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这种重量上的差异要远远小于由充电或是擦拭屏幕灰尘引起的差异。
The difference in weight is far less than the difference produced by charging the battery, or wiping dust off the screen.
LCD屏幕同样也会消耗更多的电池：iPad承诺10个小时的电池寿命，而与之相比，Kindle一个星期不充电也没有关系。
The LCD screen also consumes more battery: An iPad promises 10 hours of battery life compared to a Kindle, which doesn't have to be charged for at least a week.
Kindle的电子墨水屏幕只是在翻页的时候才会耗电。 如果把无线网络关掉的话你一个礼拜都不须充电。
The Kindle’s E Ink screen consumes power only when the page is turned; turn off the wireless and you can go for a week without plugging it in.
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