Red Adair had to stop the fires and cap the wells.

VOA: special.2009.03.22

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

Lee,at last,had to stop fighting.

VOA: special.2009.11.12

He served in many other towns. Often,all he had to do was walk into a room to stop a fight.

VOA: special.2010.03.10

President Truman tried to stop the increases through a special price control agency that had been created during the war.

VOA: special.2011.08.11

I had forgotten to add more oil to the drop of water to stop it from drying.

VOA: special.2009.07.25

She explained later that this seemed to be the place for her to stop being pushed around and to find out what human rights she had,if any.

VOA: special.2009.03.08

ANC Secretary-General Gwede Mantashe Wednesday announced that the party's senior leaders had urged members to stop singing the song.

VOA: standard.2010.04.08