When you have ANY two samples of water—that's just ordinary tap water—one of them will ALWAYS freeze first.

当你拥有任何两种水的样本的时候——就是普通的水龙头里面的水——其中的一个肯定会更快结冰。

When you have ANY two samples of water - that’s just ordinary tap water - one of them will ALWAYS freeze first.

当你有任何两个水样时——那只是普通的自来水——其中一个总是会先结冰。

This one's just filled with ordinary tap water, but I'm going to add two spoons of ordinary salt to make a saline solution.

这只装的只是普通的自来水，不过我要加两勺普通盐调成生理盐水。