| 单词 | 外膜 |
| 释义 | 〔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〔uncoated〕Not being covered with a layer:无涂层或外膜的：〔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〔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〔amoeba〕A protozoan of the genusAmoeba or related genera, occurring in water and soil and as a parasite in other animals. An amoeba has no definite form and consists essentially of a mass of protoplasm containing one nucleus or more surrounded by a delicate, flexible outer membrane. It moves by means of pseudopods. 变形虫，阿米巴：一种变形虫属 或相关属的原生动物，存在于淡水和土壤里，或为其它动物的寄生虫。变形虫没有固定形体，身体主要由原生质组成，包括由一个柔软、有韧性的外膜包围的一个或一个以上的细胞核。变形虫系由伪足移动 〔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 |
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