Because of water's latent heat capacity, a tubful of water placed in a greenhouse on a night of freezing cold will act as a reserve supply of heat.

因为水的这种潜容量，在滴水成冰的夜晚置中的一管水可起到保源的作用。

And should you drop it into a tubful of cloudy, child-colored water, not to worry — it floats.

而且，如果不慎落入澡盆，里面盛满了孩子们洗过澡的浑水，你也不用担心找不到——它会自动浮上水面。