肯定
He had to be certain. There could be no room for doubt.
他必须确定无误。不能有任何的犹疑。
If you want to be certain of getting a ticket, book now.
要想有把握买到票，现在就得预订。
She would break my biscuits in half to be certain I wouldn't choke.
她会把我的饼干掰成两半，以确保我不会噎着。
"When I was reared in the British West Indies my grandmother used to always tell me, you may not be loved by certain forces in a society and you have to understand why.
VOA : special.2011.03.20
Some of the important figures-- there had to be certain inventions to make it work.
一些重要人物以及,重要的创新推动了保险的发展
金融市场课程节选 : 耶鲁公开课
but you've got to be certain when you get out there. And make a positive move.
但是你在外面，你必须要小心。然后积极行动。
SpeakingMax英语口语达人 : 我使用自行车
And many students received warnings that they will be expelled from universities,and has sent hundreds of their basij and basij students to certain universities,".
VOA : standard.2009.12.07
It would be embarrassing,I think," . "I would be objecting to that because at a certain point security begins to get into your personal life,"
VOA : standard.2009.12.30
Some doctors may want extra studies to be certain the anti-flushing drug is safe.
It requires the judgement of Solomon to be certain where that balance should lie.
To be certain, asset protection is an important discipline within the field of wealth management.