Second, we must reduce emissions of waste and reduce environmental pollution in cities.

第二，我们必须要减少各种垃圾的排放量，减少对城市环境的污染。

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This "second" article refers to the inheriting section of the "first" one, it firstly introduces six kinds of active measures to reduce harmonics pollution;

本文“二谈”系“一谈”的继篇，首先介绍了减小谐波污染的六类主动措施；

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This "second" article refers to the inheriting section of the "first" one, it firstly introduces six kinds of active measures to reduce harmonics pollution;

本文“二谈”系“一谈”的继篇，首先介绍了减小谐波污染的六类主动措施；

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