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

单词	yolk-sac placenta
释义	yolk-sac placenta noun : a structure in some sharks resembling a placenta, consisting of the vascular embryonic yolk sac wall intimately associated with the vascular maternal uterine or oviducal wall, and serving to nourish the embryo
随便看	emptiness emptings emptins emptio emptio et venditio emption emption emptional emptio-venditio emptor emptor empty empty empty-cell process empty-cell treatment empty glume empty-handed empty-headed emptyhearted empty nester empty out empty weight empty word empurple empurpled

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