1. 游泳者
2. 会游泳者
3. 鳔
4. 浮筒
5. 浮标
6. 浮子
7. 流速指示器

1. a trained athlete who participates in swimming meets;

   "he was an Olympic swimmer"
   

2. a person who travels through the water by swimming;

   "he is not a good swimmer"
   

1.游泳运动员;游泳爱好者;游泳者
Aswimmer is a person who swims, especially for sport or pleasure, or a person who is swimming.

e.g. You don't have to worry about me. I'm a goodswimmer...
你不用担心我。我水性很好。
e.g. She wants to become an Olympicswimmer...
她想成为一名能够参加奥运会的游泳运动员。

1. 浮子：swelling capacity of coal 煤的膨润度 |swimmer 浮子 | swing 摇动

2. swimmer在线翻译

2. 游泳运动员：fortune-teller 占卜者,算命先生 |swimmer 游泳运动员 | snake-charmer 弄蛇者

3. 游泳选手：蹼泳 fin swimming | 游泳选手swimmer | 分组预赛 heat