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例句：

1. 1. The legend of the dragon in ancient China is well-known.
   中国古代的龙传说广为人知。
2. 2. The sea serpent was said to have lived under the sea for thousands of years.
   据说海蛇在水下生活了数千年。
3. 3. The floods caused by climate change are a major concern for many countries.
   由于气候变化引起的洪水是许多国家的主要担忧。