certainty造句

Such attitudes are valueless unless they reflect inner cognition and certainty.
这种态度如果不能反映内心的认知和把握就毫无价值。

Her return to the team now seems a certainty.
她的归队现在似乎已成定局。

I know for a certainty that the company has been bought up.
我确实知道公司已经被人收购了.