Swimming in the ocean can be fun. But you have to be very careful. It's not like swimming in a swimming pool or a lake. It can be dangerous. The waves can be very strong. They can push you out far from the beach!
在海裡游泳聽起來很好玩，但比游泳池危險很多，一不小心，海浪可能把你推到離岸很遠的地方！
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