| 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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