| 单词 | sea urchin |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔SHARP〕Sea urchins and starfish feel prickly to the touch. 海胆和海星摸上去有刺。朗文写作活用〔echinoid〕An echinoderm of the class Echinoidea, which includes the sand dollars and sea urchins.海胆：一种属于海胆纲的棘皮动物，包括沙钱和海胆美国传统〔needle〕A fine, sharp projection, as a spine of a sea urchin or a crystal.针状物：精细尖锐的突出物，如海胆的脊椎骨或水晶球美国传统〔test〕A hard external covering, as that of certain amoebas, dinoflagellates, and sea urchins.甲壳：特定种类的变形虫、双鞭毛虫和海鞘的外部硬壳美国传统〔urchin〕A sea urchin.海胆美国传统 |
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