One should clearly state the visible change and write down the chemical equation involved.

须清楚写出可见变化和有关的方程式.

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Don't you find it upsetting to reduce an emotion like love to a chemical equation?

你不认为将爱情这种情感降低为一种化学方程式有些扫兴 吗 ?

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There are many ways to keep the chemical equation of many group Balancing coefficient balance.

多组配平系数方程式的配平,方法较多.

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