单词 | 双胚层 |
释义 | 〔ectoderm〕The outer layer of a diploblastic animal, such as a jellyfish.外层:双胚层动物的外层,如海蜇〔diploblastic〕Derived from two embryonic germ layers, the ectoderm and the endoderm. Used of lower invertebrates, such as sponges and coelenterates.双胚层的:具有两个胚层(外胚层和内胚层)的。用于低等无脊椎动物,如寄生虫和腔肠动物 |
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