It stands for domain name system, in case that helps.

它代表了域名系统，如果有益的话。

Watch in case that the child touches that electric wire.

注意别让孩子去触摸那根电线。

It cannot be covered with objects when running in case that it cannot radiate normally.

在运转时不可将物件复盖在电机上，以免阻碍散热。

Thirdly, we should not climb the fence of the school in case that we might hurt ourselves.

第三，我们不应该爬上围墙的学校，以的情况下，我们可能会伤害自己。

That, in a nutshell, is how D.N.S. works. (It stands for domain name system, in case that helps.)

简而言之，这就是D.N.S.的工作。(它代表了域名系统，如果有益的话。)