名词
中文翻译：珊瑚
同义词：
['coral', 'cephalopod', 'mollusk']
例句：
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1. The coral reefs are a vital habitat for marine life.
珊瑚礁是海洋生物的重要栖息地。
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2. The coral is so bright and colorful that it attracts many visitors.
珊瑚如此鲜艳多彩，吸引了许多游客。
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3. The coral reefs are under threat from pollution and climate change.
珊瑚礁正受到污染和气候变化的威胁。