名词
中文翻译：水螅
同义词：
['hydra', 'hydraphid', 'hydroid']
例句：
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1.Camerostomas are found in the ocean and can be seen swimming around coral reefs.
水螅存在于海洋中，可以在珊瑚礁周围游动。
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2. The hydra is a fascinating creature that has been studied for centuries.
水螅是一种令人着迷的生物，几个世纪以来一直受到研究。
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3.Hydrae are often used as food sources for humans and other animals.
水螅经常被用作人类和其他动物的食物来源。