化学无时无刻不存在在我们的周围。到处都存在着化学：当我们呼吸时，当我们触摸时，当我们反应时，甚至当我们和别人互动时。
Chemistry is what happens when we breathe, when we touch, when we react, and even our behaviour with others is chemistry at some greater level.
化学无时无刻不存在在我们的周围。到处都存在着化学：当我们呼吸时，当我们触摸时，当我们反应时，甚至当我们和别人互动时。
Chemistry is what happens when we breathe, when we touch, when we react, and even our behaviour with others is chemistry at some greater level.
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