| 单词 | amnion |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔amniography〕Radiographic examination of the uterine cavity and fetus following injection of a radiopaque substance into the amnion.羊水造影术：将造影剂注射入羊膜腔内后，用放射线观察子宫腔和胎儿美国传统〔amniote〕Any of a group of vertebrates that have an amnion during embryonic development, including reptiles, birds, and mammals.脊椎动物，羊膜动物：任一种在胚胎发育期间有羊膜的脊椎动物，包括爬行动物、鸟类和哺乳动物美国传统〔embryonic membrane〕Any of the membranous structures closely associated with or surrounding a developing vertebrate embryo, including the amnion, chorion, allantois, and yolk sac.胚膜：任何与发育中的胚胎相关或包围胚胎的膜状结构，包括衣胞、绒膜胚囊、尿膜和卵黄囊美国传统 |
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