I would not know for all users, but a cookie is a good option.

我不知道所有用户的cookie，但是是一个很好的选择。

youdao

Without these spiritual teachers I would not know the way to practice to bring peace and happiness into my life and into the life and into the lives of my family and society.

没有这些师长，我将不知道如何把自在和喜悦带到生活中，带如家庭和社会。

youdao

She answered: "I am not sleeping, I am waking. Would you know what I am making?"

她回答说：“我不是在睡觉，我醒着呢。你知道我在做什么吗？”

youdao

"When I am at home or when I am in my office here, I would not know the Olympics are happening in this city.

VOA: standard.2010.02.23

In any event, this is some interesting research opportunity, so again, no obligation, you don't have to do this, I won't even know if you are or not, but I just thought I would present these in the case you might find them interesting things to do.

不管怎样,这都是些不错的研究机会,不过不是强制的,我甚至都不知道你们参加与否,不过我还是会把这些放在这里,这样大家可能会找到一些有趣的事情去做

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

I would look at it and know it looks nice, but I'm not going to say,

我可以去看看，知道那个很不错，但是不会说：

喜欢毕加索吗？ - SpeakingMax英语口语达人

"I would rather not know, " Robert Jordan said.

NPR: Robert Jordan, Hemingway's Bipartisan Hero

If I had not done this, I would never know what I did not know.

FORBES: To Continue Growing, Quit The Big Job

If I was a player I am not even sure if I would want to know.

FORBES: The Devilish Details Of The NCAA's New Genetic Testing Rules