allantois的翻译，读音

词态

例句

The membrane working with the chorion is the allantois. 与绒毛膜协同工作的是尿膜。

If the chorion is the doors, then the allantois is essentially the lobby of the building. 如果绒毛膜是门，那么尿膜就是这座建筑的大堂。

The chorion and the allantois make sure the embryo has everything it needs and gets rid of anything it doesn't. 绒毛膜和尿膜确保胚胎获得一切所需，并且也为其清除一切废物。