The scientist says this mission has been planned for many years, but he is not sure when it will happen.

VOA: special.2010.05.25

because he viewed his first responsibility was to make sure the country is as safe as possibly can be.

因为他认为自己的首要任务是,让国家尽可能地,处在安全之中。

普林斯顿公开课 - 国际座谈会课程节选

I'm sure he is coming.

我肯定他会来。

I'm sure 实战 - SpeakingMax英语口语达人

They want to be sure that he is not dealing off the bottom of the stack of cards.

VOA: special.2009.11.22

Cervantes is preoccupied with a figure who is crazy we're pretty sure of that, but he certainly isn't.

塞万提斯专注于一个疯了的人物,这一点我们很确定，但是他并不这么认为。

耶鲁公开课 - 文学理论导论课程节选

Michael J.Fox says he is sure that a cure for Parkinson's disease will be found in the future.

VOA: special.2009.04.07

Even when the president first came into the office he is always careful to make sure he was always well briefed, meet regularly with his national security team, with his intelligence briefers, on a regular basis.

即使是总统从一开始,走进办公室,他总会很小心地确保,他有个良好的情况简介，和他的安全小组见面，和情报简报员见面，这些都是定期的。

普林斯顿公开课 - 国际座谈会课程节选

That is because no one knows or sure if he really lived.

VOA: special.2009.02.21

They are watching to make sure he is dealing honestly.

VOA: special.2009.11.22

Pillay says he has seen significant improvement and is sure the target of five percent transmission rate will be reached.

VOA: standard.2010.07.01

He says no one seems sure of how bad the situation is, or what will happen down the road.

VOA: standard.2010.05.06

He said they want to make sure that the new cap is not causing the oil to escape elsewhere.

VOA: standard.2010.07.16

But Cheney said he is not sure the Obama administration will do what is necessary to keep Iran from developing nuclear weapons.

VOA: standard.2010.02.14

Mr.Obama said once the decision is made he will make sure the American public fully understands the new war strategy and all it entails.

VOA: standard.2009.11.13

Republican Congressman Jeff Flake said at the news conference he supports opening up to Cuba even though he is not sure how its government would react.

VOA: standard.2009.05.06

The current chair of the Senate Judiciary panel - Democrat Patrick Leahy - says he will do all he can to make sure a new justice is confirmed by the time the Supreme Court reconvenes on October 5.

VOA: standard.2009.05.03