to move through water by moving the body or parts of the body

We spent the day on the beach but it was too cold to go swimming. 我们一整天都呆在海滩上，但天气太冷，不能游泳。

Her ambition is to swim (across) the English Channel. 她的目标是横渡英吉利海峡。

I swam two miles this morning. 我今天早上游了两英里。

If food is swimming in/with a liquid, it has too much of that liquid in it or on it.

The salad was swimming in oil. 色拉里的油太多了。

(of an object) to seem to move around

Getting up too suddenly made the room swim before her eyes. 因为起身太猛，她一时间觉得整个房子似乎都在旋转。

If your head swims, you feel confused and are unable to think or see clearly.

After the second or third drink, my head began to swim. 两三杯酒下肚之后，我就开始觉得头晕了。

a time when you swim

Let's go for/have a swim this afternoon. 我们今天下午去游泳吧。