"Yes, yes; for certain that was Kay," said Gerda.(“是的，是的；那一定是加伊。”格尔达说。)
She couldn't know what time he'd go, or even for certain that he'd go at all.(她不知道他何时要走，甚至于还不能确定他究竟要不要走。)
If your child regresses to babyish behaviour, all you know for certain is that the child is under stress.(如果你的孩子退步到幼稚的行为，你可以肯定的是孩子正处在压力之下。)
Early kites were built for certain uses.(早期的风筝有特定的用途。)
McKee and his team now knew for certain that they had found the wreck, but were as yet unaware that it also housed a treasure trove of beautifully preserved artefacts.(麦基和他的团队现在已经确定他们找到了沉船，但他们还没有意识到这艘船里也有一个保存完好的艺术品宝库。)
The courts were empowered to impose the death sentence for certain crimes.(法院有权因某些罪行判处罪犯死刑。)
There are many things she knew for certain.(她对很多事情都很有把握。)
So, honestly, I don't know for certain yet.(所以，实话说，我都不知道究竟会是谁。)
For certain personal reasons I shall not be able to attend.(由于某种个人原因，我将不能出席。)
I can't say for certain when we'll arrive.(我说不准我们什么时候能到。)
