You don't have to worry about me. I'm a good swimmer

　　你不用擔(dān)心我。我水性很好。

　　He owed his survival to his strength as a swimmer

　　他是因為水性好才幸免于難的。

　　She wants to become an Olympic swimmer

　　她想成為一名能夠參加奧運會的游泳運動員。

　　Cross-currents can sweep the strongest swimmer helplessly away.

　　即使最強(qiáng)壯的游泳者也會無助地被交叉水流沖走。

　　It surprised them all that she was such a fine swimmer.

　　她游得這么好，令他們都非常驚訝。