I'm definite about this.

我对这事毫无疑问。

《牛津词典》

Are you absolutely certain about this?

你对这事绝对确信无疑吗？

《牛津词典》

What aggravates you most about this country?

这个国家最让你恼火的是什么？

《柯林斯英汉双解大词典》

Doris Kearns Goodwin wrote about this in her two thousand five book "Team of Rivals: The Political Genius of Abraham Lincoln."

VOA: special.2009.02.09

Owen, they have a mat on a table, and he's sitting there, meditating, did I ever tell you about this?

欧文他们在桌上摆了一张垫子，他就坐在那里，冥想，我说过这件事吧？

普林斯顿公开课 - 人性课程节选

It's a huge book which is all about this short story by Balzac, "Sarrasine," that he begins this essay by quoting.

这本大部头的书都是在讲巴尔扎克的短篇小说《沙拉辛》的，在文章开头他引用道。

耶鲁公开课 - 文学理论导论课程节选

With that, a certain skepticism crept into my soul about this high-tech medical intervention.

NPR: Excerpt: 'The Healing Of America'

What's really remarkable about this epic, though, is that it's headed by a little girl.

NPR: This Season, the Scrappy Heroes Are Wearing Skirts

What do you feel about this question of the number of franchises and the number of companies?

BBC: George Muir and Stuart Francis