For anight dive like this, he should have had a surface float with its ownlight to make it visible.

像这次的深夜独潜，他应该准备一个能够让别人看到的发光的水面飘浮物。

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These plants float on the surface of the water.

这些植物漂浮在水面上。

《牛津词典》

This article has only scratched the surface of the float property.

本文只对浮动属性作了十分浅显的介绍。

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Russia's Vesti TV news says the Yuri Dolgoruky's escape capsule can accommodate the whole crew and float to the surface in an emergency.

BBC: New Russian nuclear sub 'safer than Kursk'

When a section is highlighted, a preview of its contents float beneath the surface of the interface, scurrying to the top when their parent option is selected.

ENGADGET: Steam Big Picture beta hands-on HD

It harbors thick layers of valuable blubber beneath its skin, and the whales are so chunky that they float quickly to the surface after they're harpooned.

CNN: Endangered right whales appear to be on the rebound