yolk-sac

英 ['jəʊks'æk] 美 ['jəʊks'æk]

• 卵黄囊

yolk-sac的英文翻译是什么意思，词典释义与在线翻译：

英英释义

名词 yolk sac:

1. membranous structure that functions as the circulatory system in mammalian embryos until the heart becomes functional

2. membranous structure enclosing the yolk of eggs in birds, reptiles, marsupials, and some fishes; circulates nutrients to the developing embryo

yolk-sac的用法和样例：

例句

1. The yolk sac is gradually vascularized.
   卵黄囊逐渐被血管化了。
2. The dye Trypan Blue has a remarkable biphasic effect on pinocytosis by yolk sal.
   染料锥虫蓝对卵黄囊的胞饮作用具有明显的双向作用。