名词
中文翻译：水螅
同义词：
['hydra', 'hydroid', 'polyp']
例句：
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1.The paramecium is a fascinating creature that lives in the ocean.
水螅是一种令人着迷的海洋生物。
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2.Paramecia are known for their ability to reproduce quickly and efficiently.
水螅以其快速而高效的繁殖能力而闻名。
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3. Researchers have been studying paramecium for decades to understand their ecological role in the ocean ecosystem.
研究人员已经研究了水螅几十年，以了解它们在海洋生态系统中的生态作用。