题目内容
Heat can flow from a hot body to a cooler one as if it were a fluid.热能从一个热的物体传到一个较凉的物体上，好像流体一样。
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Death in old age is rarely called untimely-a long life is thought to be a full one.古时候的死亡很少被称为不及时的，高寿被认为是完整的生命。
The material first used was copper for the reason that it is easily obtained in its pure state.最先使用的材料是铜，因为纯铜易于制取。
This kind of plane cannot be built unless we find a metal even lighter than this high-strength aluminum alloy.我们不可能造出这种飞机来，除非我们找到一种比这种高强度的铝合金更轻的金属。
政策上不搞“一刀切”。We should not impose uniformity on the implementation of the policies.
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