雾霾中含有有毒的元素，人们呼吸着雾霾，损害着他们的身体。
The haze contains toxic elements, people breathe it and hurt their bodies.
在这个指南中，我们将了解如何使用CSS来定位元素，并清除了周围的雾层的想法很多。
In this guide we'll learn about how to position elements using CSS, and clear away a lot of the fog that surrounds the idea of a layer.
当使用旋流雾室系统时，对于所测三十个元素的检出限，相对于双管雾室系统降低了二至三倍。
Under the same operating conditions the detection limits of 30 elements are reduced two fold to three fold when CSCS is used.
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