双语例句原声例句
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虽然把ipad搁在我的膝盖上可以解决重量的问题，但没多少人会把书放在膝盖上看。
Though resting the iPad my lap resolved the weight issues, most people do not read books by lying them on their laps.
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这是一个很简单的问题，通过观察重量是多少以及它下降了多远，来确定桨轮做了多少功。
It's a trivial matter, by looking at what is the weight and how far does it drop, to say OK, how much work is done by the paddlewheel.
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制造商遇到的一个问题是重量较轻的汽车往往噪音大。
A problem for manufacturers is that lighter cars tend to be noisy.
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And so you could construct all subsets, check that the weight is less than the weight of the knapsack, and then choose the subset with the maximum value.
因此你可以构建所有子问题，判断它的重量,是否小于背包的重量，然后选择值最大的子问题。
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