| 单词 | 胚胎由此发育 |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔blastoderm〕The layer of cells formed by the cleavage of a fertilized mammalian egg. It later divides into the three germ layers from which the embryo develops.胚盘：由哺乳动物受精卵分裂而形成的细胞层。后期分裂为三层，胚胎由此发育美国传统 |
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