1 refreshing 令人神清气爽的adj.
I guess one good thing about swimming is that it's usually quite refreshing. 我觉得游泳的一个好处是它令人神清气爽的。
2 give sb. a thrill 给人一些激动的感觉
I think one reason why some people engage in dangerous sports might have something to do with the fact that doing dangerous stuff kind of gives them a thrill. 我觉得有些人喜欢参与危险运动的原因是危险的东西能或多或少给你一些激动的感觉。
3 a way of socializing 社交的一种方式
I guess I would say a lot of people basically see it as a way of socializing. 我猜很多人基本上把它作为一种社交的方式。
4 move in quite a smooth motion 平稳地动
When you swim, your body's moving in quite a smooth motion. 当你游泳的时候，你的身体会平稳地动。
5 make sudden movements 突然动几下
Whereras in things like basketball and football, you often have to make sudden movements, which can lead to Injuries if you're not careful. 然而如果打篮球和踢足球，你常常需要突然动几下，如果不小心都可能会受伤呢。
