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罗斯:
My friends are going swimming tomorrow. 
我的朋友明天打算去游泳.
凯西:
Why don`t you go, too?
你为什么不也去呢? 
罗斯:
I`m afraid I'll look foolish. I don`t know how to swim.
我怕我会看起来很笨.我不会游泳.
凯西:
You shouldn`t be afraid to learn. The courage to learn is a valuable asset in life.
你不应该怕学.敢于学习是一生宝贵的财富.