英语短语词组词汇yolk sac的音标、释义、翻译、用法及例句-英语短语词组词典-福建条码网

短语	yolk sac
释义	yolk sac, yolk bag 【胚胎学】卵黄囊(从脊椎动物胚胎的中肠脐伸出的膨大的胚外囊体，富含卵黄) 卵黄囊(大多数哺乳动物胚胎中不含卵黄的、在胚胎发育早期变为退化器官的同源器官)
随便看	thirty weight thirty-year rule Thirty Years' War this this and that this and (或 or) that this-a-way Thisbe thisbes this bout this child this day and age this day fortnight this day month this day week this earthly round thises this great等 round this here this is it this is the lot this life this many a day this moment this mortal coil

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