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The law of conservation of energy also takes a simple form.
能量守恒定律也获得简单的形式。
youdao
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One important form of soil conservation is the use of windbreaks.
一个重要的保护土壤的方式就是防风墙。
youdao
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One important form of soil conservation is the use of windbreaks.
一个重要的保护土壤的方式就是防风墙。
youdao