You all know this. When you put something, like an impurity, a salt or sugar in the water, the melting point gets depressed. It goes down.

这个你们都知道，如果你放一些杂质，比如盐或者糖在水里面，熔点会下降，下降了。

youdao

You all know this. When you put something, like an impurity, a salt or sugar in the water, the melting point gets depressed. It goes down.

这个你们都知道，如果你放一些杂质，比如盐或者糖在水里面，熔点会下降，下降了。

youdao