英语词汇“yolk sac, yolk bag”的意思、用法、释义、翻译、读音、例句、短语、词组-英汉翻译词典

单词	yolk sac, yolk bag
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	piece (of work) piece of writing piece on piece on sth piece out piece packaging machine piece part piece-part piece part number piece parts piece-parts piece-per-houre rate piece price piece production piece-production pieceproduction piece production cost piece-production cost Piece,Protective Mouth piecer piece-rate piece rate piece-rate pay piece rate pay piece rate plan

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