名词中文翻译
中文翻译：水螅纲
同义词：
['hydra', 'hydrozoa']
例句：
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1.The hydra is a fascinating creature that can grow up to 20 feet long.
水螅是一种有趣的生物，可以长到20英尺长。
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2. Hydrozoa are found in many marine environments and play important roles in the ecosystem.
水螅存在于许多海洋环境中，对生态系统起着重要作用。
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3. The hydra has been used as a symbol of regeneration and renewal in many cultures.
水螅在许多文化中被用作再生和更新的象征。