单词 | 卵黄腺 |
例句 | DEFINITIVE EXAMPLES 权威例句〔vitellarium〕A group of glands that secrete yolk around the egg in those invertebrates, such as worms, whose eggs do not contain yolk.卵黄腺:一些脊椎动物中在卵周围分泌卵黄的一组腺,如其卵不包含卵黄的虫子美国传统 |
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