You think I did it deliberately, but I assure you (that) I did not.

你认为这是我故意干的，不过我向你保证不是的。

《牛津词典》

I assure you I was, 'she returned.

“我跟你保证我说的是事实话，”她回答。

youdao

Some people still do and, I assure you, I don't mind at all.

有些人还这么叫我，我向你保证，我一点都不在乎。

youdao

So,if you take number one--but we don't have to go through them all and I assure you we won't--if you take number one, the Ain,a-i-n,it's named after a river; or if you take number two,the Aisne,a-i-s-n-e, it's named after a river; and how many hundreds of thousands of people died along there in World War One or,you take number three,the same thing,Allier.

如果你看第一个省,我向你们保证,我们不用挨个了解,看第一个省,安省,a-i-n,来自一条河的名字,或是第二个埃纳省,a-i-s-n-e,来自于一条河的名字,有成千上万的人在这里死于,第一次世界大战,第三个,阿列省

耶鲁公开课 - 1871年后的法国课程节选

So I think what the President has done is simply add to a very strong national security team with Dennis and I think -- I can assure you, given the list of countries, that they'll be plenty busy.

WHITEHOUSE: Press Briefing

I'm told from scheduling that the President has accepted a meeting with the head of FIFA World Cup, but we have not yet altogether made plans -- though I can assure you that a small group of us have assembled in order to move the President in that direction.

WHITEHOUSE: Press Briefing

Political rhetoric and shooting spitballs is not, I assure you -- and I know you know this -- is not what the American people want out of Washington right now.

WHITEHOUSE: Press Briefing