a chemical reaction and its reverse proceed at equal rates
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Also, on the basis of this knowledge, chemical equilibria can be predicted theoretically with great accuracy. 同时，根据这种知识，还能够很精确地在理论上预言化学平衡。
A new study argues that the structures really emerged to help keep fish in chemical balance with their environment. 新的研究认为，这个器官的出现是为了帮助鱼类在生活的环境中保持化学平衡。
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