certain about信息详情
确定关于
certain───pron.某些；某几个；n.(Certain)人名；(葡)塞尔塔因；(法)塞尔坦；adj.某一；必然的；确信；无疑的；有把握的
certain level───某一水平
certain extent───一定程度；某种程度
certain standards───某些标准
certain criteria───特定标准（criteria是criterion的复数形式）；某些标准（criteria是criterion的复数形式）
certain field───特定领域
certain situations───确定的情况
certain n───确定n
certain situation───确定的情况
They are less certain about the smallest planet.───他们对这颗最小的行星就不那么确定了。
you absolutely certain about this?───你对这事绝对确信无疑吗？
firm certain about what its customers value?───公司是否确定它的客户所珍视的东西？
Earlier this year, NHTSA Chief Counsel Kevin Vincent said the auto industry isn't certain about whether the vehicles are safe after a crash.───今年早些时候，NHTSA首席法律顾问文森特（KevinVincent）说，汽车行业不能肯定汽车在撞击后是否安全。
Dimon said he was less certain about the direction of the U. S. economy.───Dimon说，他并不能确定美国经济的走势。
You know who you are better than any recruiter, so don't let someone convince you to take something you don't feel certain about.───你比任何应征者都了解自己，所以不要让别人说服你做去对你感觉没把握的事情。
Exacerbating it all was the "confidence effect, " in which students became more certain about their guesses.───最后一个“信心效应”，这使得学生变得更确定自己的猜测。
Since we cannot be certain about having all unacceptable conditions identified, there will always be an unexplainable residue.───既然我们不能确定是不是拥有经过辨识的不可接受条件，那麽就永远会有无法解释的残馀。
As usual, the markets made a monkey out of anyone who had been certain about what had to happen next.───一如往常，市场再次愚弄了那些对未来走势有把握的投资者。
One can not be certain about that; one can only express an opinion as to the probability.
Scientists are still not certain about this in spite of what the reader might believe.
Are you quite certain about this?
Now, are you certain about that?
He was quite certain about/of his attacker's identity.
He was certain about one thing - she would come back one day.
Are you absolutely certain about this?
One of the few things certain about the outlook is that 1993 will be a difficult year financially.
But the Bush budget seems less certain about the civil service.