河马白天大部分时间都泡在水里。

___Hippos spend most of the day submerged in water.

河马白天大部分时间都待在水里保持凉爽。

___Hippos spend most of the day in water to stay cool.

这家儿童服装店的标志是两只微笑的河马。

The logo of this kids' clothing store features two smiling ___hippos.