These plants float on the surface of the water.

这些植物漂浮在水面上。

If steel is heavier than water, why are ships able to float on the sea?

如果钢比水重，为什么船能在海上漂浮？

Can you float on your back?

你能仰浮吗？

If steel is heavier than water, why are ships able to float on the sea.

如果钢比水重，为什么船能在海上漂起来。

The logs float on the river.

圆木在河上漂浮着。