英语词汇“yolk sac”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	yolk sac
释义	yolk sac noun zoology 1. the membranous sac that is attached to the ventral surface of the embryos of birds, reptiles, and some fishes and contains yolk 2. the corresponding part in the embryo of mammals, which contains no yolk
随便看	radar trap Radcliffe raddle raddle raddled Radek Radetzky radge dabbler dabbling dabchick dab hand dabster DAC da capo Dacca Dacca dace dacha Dachau dachshund Dacia Dacian dacite dack

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