介绍:

I'm a terrible/bad swimmer.

goggles /ˈɡɑː.ɡəlz/ 游泳镜

prescription goggles 有度数的游泳镜

swimsuit 泳衣

dog paddle 狗刨式

Backstroke 仰泳

open water 开放水域（湖或海）

We'll be swimming in open water instead of in a pool.
我们会在开放水域游泳，而不是在游泳池。

stroke 游泳姿势

How many strokes did you learn in your swimming classes?
上游泳课时你学过几种游泳姿势。