I think it becomes 30 degrees for the freezing of water and 22.5 x 4, which I don't know what it is, 90 100 or something -- no, it's 90 I think.

我想水的冰点,应该变成了30度,22。5，4，我不知道是多少，大概100左右--不，我想是。

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I need to know how long, so that I can let my roommates know.

我得知道大概有多久，这样我就可以告诉我的室友们了。

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