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The physical functions include separating heat, cutting off oxygen and decreasing burning reaction temperature.
物理作用包括隔热、隔氧、降低燃烧反应温度等。
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The cutting down of forests makes oxygen less.
砍伐森林导致氧气缺失。
youdao
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The cutting down of forests makes oxygen less.
砍伐森林导致氧气缺失。
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