Palin has also embarked on a rigorous schedule of campaigning for Republican candidates for this year's midterm congressional elections in November.

VOA: standard.2010.02.09

It's a pretty state of affairs, in his view, when the most rigorous thinking that's being done about literature is being done in popular journals.

他认为，关于文学的严肃的思考大多,被发表在流行杂志上很不妥当。

耶鲁公开课 - 文学理论导论课程节选

Now to make that lower-of-the-two-prices comment a little bit more rigorous, let's figure out what the demand actually is for these firms.

为了说明两者价格较低者,具体是什么意思,先来解决这些公司真正的需求量是什么

耶鲁公开课 - 博弈论课程节选

It's a very rigorous activity with an extensively reviewed report and a lot of negotiations over the exact wording of it.

NPR: Can Climate Change Explain Odd Weather?

"I can certainly say that I had been through a very rigorous process that's now extended across a couple of weeks, " Mr Paxton said after being formally appointed by the Police and Crime Panel.

BBC: Douglas Paxton was sole applicant for Chief Constable job

It's a rigorous process, says Italian actress Lisa Genovese.

BBC: Magazine