Unfortunately it is also one of the most polluting .

但不幸的是，混凝土同时也是产生污染最大的产品之一。

These destroy the polluting molecules .

这些羟基会破坏污染分子。

Airports are also noisy and polluting .

机场也充满噪声和污染。

Then you are polluting your inner space .

这样，你的内心就会受到污染。

We are polluting the water .

我们正在污染水资源。