yolk sac

常見例句

雙語例句

• The yolk sac and yolk stalk on one of them were well preserved.
  觀察了三例人胚外形，其中一例還有保存良好的卵黃囊和卵黃蒂。
• The results showed that more than80%of nutrition in yolk sac were utilized in59hours, which suggested that it was the main period of yolk sac utilization.
  結(jié)果表明，在59時(shí)齡以內(nèi)80%以上的卵黃囊營養(yǎng)被吸收利用，說明這一時(shí)期是卵黃囊吸收利用的主要時(shí)期。
• I do not believe, however, that this is normal, since in the wild, young with such a large yolk sac probably would not survive without parental protection.
  我不相信，不過，這是正常的，因?yàn)樵谝吧h(huán)境年紀(jì)這么大的卵黃囊，也許就不會(huì)生存父母的保護(hù)。
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