So, that means that the vapor pressure above the solution is lowered. So I should have said vapor pressure lowering.
这就表示溶液上的，蒸汽压下降，所以这就是刚才说的饱和蒸汽压下降。
And we also drew a phase diagram to show how this vapor pressure lowering was going to imply freezing point depression and boiling point depression.
我们来画相图，蒸汽压下降，意味着凝固点降低，和沸点降低。
Colligative properties are the properties like the vapor pressure, lowering when you have a mixture in a liquid, instead of having a pure substance you have amixture of substances here.
依数现象是这样一种现象,当你把物质混合在一起的时候,你不会得到纯物质,而是得到混合物质。
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