| 单词 | 外膜 |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔adventitia〕The membranous outer covering of an organ or a blood vessel.外膜：器官或血管的膜状外表覆盖物美国传统〔chlamydate〕Having a mantle. Used of mollusks.有外膜的。用于指软体动物美国传统〔chorion〕The outer membrane enclosing the embryo in reptiles, birds, and mammals. In placental mammals it contributes to the development of the placenta.绒毛膜：在爬行类动物、鸟类及哺乳类动物中包含胚胎的外膜，在有胎盘哺乳动物中与胎盘的发育有关美国传统〔cornea〕The transparent, convex, anterior portion of the outer fibrous coat of the eyeball that covers the iris and the pupil and is continuous with the sclera.角膜：眼球似纤维的外膜的前部透明凸出部分，它覆盖虹膜和瞳孔并与巩膜连接美国传统〔ectosarc〕The ectoplasm of certain protozoans, such as the amoeba.原虫外膜：某些原虫如阿米巴变形虫的外质美国传统〔epicardium〕The inner layer of the pericardium that is in actual contact with the surface of the heart.心外膜：紧密覆盖在心脏表面的心包膜脏层美国传统〔epineurium〕The thick sheath of connective tissue surrounding a nerve trunk.神经外膜：环绕神经干的连结组织的外鞘美国传统〔husk〕The outer membranous or green envelope of some fruits or seeds, as that of a walnut or an ear of corn.果壳，种膜：某些水果或种子的外膜或绿色的外壳，如胡桃或玉米穗的壳和膜美国传统〔microwave〕Never microwave a whole egg without pricking the yolk with a toothpick to break the outer membrance.若在微波炉中煮整蛋时，务必先用牙签将蛋黄外膜刺破。21世纪英汉 |
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