单词 | class echinoidea |
释义 | DEFINITIVE EXAMPLES 权威例句〔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〔sea urchin〕Any of various echinoderms of the class Echinoidea, having a soft body enclosed in a round, symmetrical, calcareous shell covered with long spines.海胆:任一种棘皮纲的棘皮动物,具有被圆形对称的螺旋状贝壳包含的柔软躯体,贝壳表面布满棘刺美国传统 |
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