She was cloned from a single cell of an adult female sheep, overturning long-held scientific dogma that had declared such a thing biologically impossible.

她是从一只成年母羊的单个细胞中克隆出来的，这推翻了长期以来一直坚持的科学教条，该教条宣称这样的事情在生物学上是不可能（发生）的。

youdao

After Sonora became an adult, she understood the strength and selflessness her father had shown in raising his children as a single parent.

在索诺拉成年后，她理解了她的父亲作为单亲父亲在抚养孩子方面所体现出的力量和无私。

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Jeff Levi is one of the authors: "In 1991,there wasn't a single state that had an adult obesity rate over 20 percent."

VOA: standard.2010.07.02

Now, we're reminded that an SV adult is what we're buying, whatever SV is, probably single value, but who the hell cares at this point?

现在，我们记住了，我们买的是一张SV成人票，不管SV是什么，可能是单程票，但是这里谁TM关心这个？

哈佛公开课 - 计算机科学课程节选

Lothian Buses is planning to raise the cost of an adult single fare next month as a result of rising fuel costs.

BBC: Lothian Buses increase fare prices

Lothian Buses last put up adult single prices in January 2009.

BBC: Lothian Buses increase fare prices

How is it that a three-year old knows how to play Angry Birds without needing a single adult to teach them?

FORBES: How Gamification Kills Classroom Training