tubful

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

且，如果不慎将香皂落入澡盆，里面盛了孩子们洗过澡浑水，你也不用担心找不到——它会自动浮上水面。

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.

因为水这种潜热容，在滴水夜晚置于温室中管水可起到保温热源作用。