1) Some are swimming in the sea.

它们在海里游泳。
2) Some are swimming in the river.

它们在河里游泳。
3) Some are swimming in the lake.

它们在湖里游泳。
5) We shall have a swim in the sea.

我们去海里游泳,
6) There they are.

它们在那里。
补充资料:它们
1.代词。称不止一个的事物。
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
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