单词 | 原生物质 |
释义 | 〔yolk〕A corresponding portion of the egg of other animals, consisting of protein and fat which serve as the primary source of nourishment for the early embryo and protoplasmic substances from which the embryo develops.卵黄:其它动物蛋内的相应部分,由蛋白质和脂肪组成,用作早期胚胎的主要营养来源和胚胎由此发育的原生物质 |
随便看 |
|
学习网英语词汇栏目收词371507余条,连同派生词、复合词、词组和习语等。每个词条提供了音标、词性、释义、用法、搭配和同(近)义词等多项功能,对所收词汇进行全方位的解释和说明,内容丰富,功能全面。