英语词汇“yolk sac”的翻译、意思、用法、释义-英汉汉英双解词典

词汇	yolk sac
释义	yolk sac 基本英英近义反义例句 n.=yolk bag动卵黄囊生命的物质基础 Noun: membranous structure that functions as the circulatory system in mammalian embryos until the heart becomes functionalmembranous structure enclosing the yolk of eggs in birds, reptiles, marsupials, and some fishes; circulates nutrients to the developing embryo近义词 vitelline sac卵黄囊umbilical vesicle脐囊用作名词Theyolk sacis gradually vascularized.卵黄囊逐渐被血管化了。 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。
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