coromat

例句：

1. 3. 同义词：coral reef, coral reefs4. 例句：1. The coral reef is a vital ecosystem for marine life.
   珊瑚礁是海洋生命的重要生态系统。
2. 2. The coral reefs are under threat due to pollution.
   由于污染，珊瑚礁正面临威胁。
3. 3. Coral reefs provide shelter and food for many species of fish.
   珊瑚礁为许多鱼类提供了栖息地和食物。