1. People cannot swim in the polluted water.
    人们不能在受污染的水里游泳。

2. Meanwhile, they should encourage those among us who cannot swim five yards before they are gasping for air.
    与此同时，他们对我们中的那些游不了5码就已喘不过气来的人应该是种鼓舞。

3. Common people still have to fly, take a boat, or swim.
    而普通人要穿越还是得坐飞机、乘船或游泳横渡。

4. It is dangerous to swim here.
    在这儿游泳很危险.