We have our past, which really, only we know about.

我们有我们的过去，这实际上，只有我们知道的。

youdao

We know about our world because we've interacted with it, and only by simulating this interaction in our heads can we comprehend the behavior of someone else.

我们了解我们的世界，因为我们在与之交互，并且仅当我们在大脑中模拟这些交互时，我们才能理解其他人的行为。

youdao

I am sure you all know from physics class about how light moves in microscopic ways and that we can only see light when the wavelength of that light is in a specific range.

我相信，你们在物理课上都学过光是如何以微观的方式运动的，以及只有在光的波长在特定的范围内时我们才能看到光这一事实。

youdao

"We know only about thirty-three percent of women have access to a program that actually has services in place to prevent mother-to-child transmission.

VOA: special.2009.07.29

And he actually did this in the late 1800's, back before even all of the elements that we know today were discovered, really only about 60% or so, 70% were discovered then that we now know today.

他最终在十九世纪晚期完成了这一壮举，难能可贵的是,虽然我们现在已经发现了所有的元素，但在当时已知的元素只有我们现在知道,百分之六七十，在这种情况下。

麻省理工公开课 - 化学原理课程节选

I think the more we think about it, the more we realize that we only know what it is if we know the system that it belongs to, which is to say, all of the things related to it which it is not. Right?

你们越仔细想这一点，就越明白，我们只有知道事物所属的符号系统,才能认识事物，所有事物都是和同一符号系统中的反面相关的？

耶鲁公开课 - 文学理论导论课程节选

But only when we know more about the role of the governing body, the International Cycling Union, in the deception that now characterises the Armstrong years, can we have complete faith in the sport.

BBC: News

Now, anything else at this point is pure speculation, since we only know about Samsung's HSA membership from the appearance of its logo on a relevant slide at AMD's keynote speech at IFA, and there's no official word on Samsung's intentions.

ENGADGET: Samsung slips into AMD's HSA party, may seek parallel processing boost for Exynos

We can only judge Mitt Romney by what we know about him.

FORBES: Bain Capital Under Investigation For Tax Avoidance-Romney Denies Any Benefit