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We had to stop to fix a flat.

我们不得不停车修一下撒了气的轮胎。

《牛津词典》

We had to stop every few miles.

我们每走几英里就得停一停。

《牛津词典》

He had to stop when he got sick late in the two thousand seven season.

VOA: special.2010.07.26

The head of a string of pigs appeared, snout-up, over the ditch, and he had to screech to a stop and watch the rear of the last pig disappear shaking into the ditch on the other side.

这时候出现了一群猪，仰着鼻子走过水渠，他只好用一个急刹车,目送着最后一只猪大摇大摆地跨过水沟,消失在另一端。

耶鲁公开课 - 1945年后的美国小说课程节选

And you could interfere with a translation by degrading messenger RNA, for example. If you had a way to specifically chew up all the RNA molecules that are responsible for making a particular protein, you could stop it from being expressed even though your cell is trying to make it.

而你就可以通过,降解其mRNA来进行干扰,再举个例子,如果你能把表达特定蛋白的RNA,统统揪出来捣毁的话,你也能阻止这段基因表达,哪怕是你的细胞在努力表达这段基因

耶鲁公开课 - 生物医学工程探索课程节选

So to shut me up, we had to stop at our local convenience store.

NPR: Letters: Legal Immigrants and Hot Cheetos

Several months later, after more studies with the same results, they had to stop.

NPR: One Year Later, Guatemala Still Reeling from Stan

There was somewhere else he wanted to go, and she had to stop him.

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