Some states only permit use for certain diseases like cancer, multiple sclerosis or AIDS.

VOA: special.2010.10.11

He found that some droplets had a certain velocity, and then others had a velocity plus some step.

他发现了一些液滴存在某个速度，还有其他的液滴有速度和位移。

麻省理工公开课 - 固态化学导论课程节选

You look at certain things and you overly -you pay too much attention to some things and too little to others.

当你在观察一些特定的事物时,你会投入过多精力,而在其他方面投入精力不足

耶鲁公开课 - 金融市场课程节选

"I'm really certain that some species are going over the edge, are disappearing, " Hedges said.

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There are certain things some kids can't do on a given day because it's too hard.

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Some are elevated in certain types of liver disease, some are low in certain types of liver disease.

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