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She looked around to make sure that she was alone.

她往四下里看看，是不是只有她一个人。

《牛津词典》

He looked in the bathroom to make sure that he was alone.

他往那间浴室里看了看，以核实那就他一个人。

《柯林斯英汉双解大词典》

I think it's still possible for us to stamp out al- Qaida, to make sure that extremism is not expanding but rather is contracting.

VOA: special.2009.02.21

There's a certain pragmatic element behind this, basically we want to make sure that every human being has a dignified life.

这后面是有实用的因素，因为我们想确保,每个人都过上有尊严的生活。

普林斯顿公开课 - 人性课程节选

to make sure that it's going to be a comfortable pair of shoes that last me a long time.

来保证这双鞋很舒服而且可以穿很久。

不需要名牌 - SpeakingMax英语口语达人

We really need to focus on trying to make sure that people don't stigmatize the community even further.

NPR: Tracking a New Strain of Drug-Resistant Staph

He said the government had to make sure that message was put across clearly.

BBC: UKIP is here to stay, says Nigel Farage

And it is our responsibility to the next generation to make sure that that gets solved.

WHITEHOUSE: G20 Summit Presidential Press Conference