And I now know for certain that I love you, Karen.

而我爱你是毋庸置疑的 凯伦。

I need to know for certain that you feel as I do.

我希望确信你和我站在一边。

Even individual people, who can compare notes by talking to one another, cannot know for certain that their own experience coincides with that of others.

即使是能与彼此交谈对照时间的人类也不能确定他们跟别人的经验相同。

I can't let you go until I know for certain that you are just as happy as you were before you asked me to marry you.

在我确定你和你向我求婚之前一样幸福之前， 我不能让你走。

" Why" ? snapped Josephine, feeling, as usual, much better now that she knew for certain that Constantia was terrified. " It's got to be done. But I do wish you wouldn't whisper, Con" .

“为什么” ？约瑟芬厉声说， 她一如既往地感觉好多了， 因为她肯定知道康斯坦蒂娅很害怕。“它必须完成。但我真希望你不要窃窃私语， Con” 。