名词
中文翻译：水母
同义词：
['sea urchin', 'hydrozoan']
例句：
-
1. The sea urchin is a fascinating creature that lives in the ocean.
海胆是一种令人着迷的海洋生物。
-
2. The hydrozoan is a small marine creature that feeds on plankton.
水母是一种小型海洋生物，以浮游生物为食。
-
3. Sea urchins are known for their unique spines and ability to survive in harsh environments.
海胆以其独特的刺和在恶劣环境中生存的能力而闻名。