I remember one time I was swimming in the ocean in Costa Rica.

记得一次,我在哥斯达黎加的海里游泳。

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It's a little bit more healthy, I think, than in a swimming pool.

这里会比在游泳池里更健康一点。

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I like swimming in the ocean.

我喜欢在海洋里游泳。

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