If you were to fall into a lake, unless you were a good swimmer, you might try to find something floating in the water-such as a large piece of wood or a branch-that could help keep you afloat.

• 如果你掉进河里，除非你是一名好的游泳者，否则你将试图抓住一切浮在水上的东西，像是大块的树干或是树枝，这些都可以帮助你漂浮起来。