The photodegradation process of bamboo involves very complex chemical reactions.

竹材光变色和光化降解过程比较复杂。

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Our teacher manages to reduce complex chemical reactions into a form we can understand.

我们的老师能将繁复的化学反应转化成易于我们理解的形式。

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The relevant chemical reactions have complex causes which involve both heredity and the environment.

相关的化学反应，有复杂的起因，它涉及到遗传和环境因素。

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Ozone is the product of these gases' participation in a complex series of chemical reactions where sunlight and heat act as catalysts.

BBC: London's clue to stubborn ozone levels