"We think we know why now; we think we were inducing the wrong immune responses." If we can use this knowledge to induce the right immune responses, we hope to really knock this on the head.

我想我们现在知道为什么了：我认为我们引发了错误的免疫反应，如果我们利用现有知识能够引发正确的免疫反应的话，我们就能一举攻克这个难题。

youdao

Now you know why I never miss a lecture.

现在你知道为什么我从不错过一节课了吧。

youdao

Now we know why she was prejudiced against the redskins.

现在我们知道她为什么对红皮肤的印第安人有偏见了。

youdao

There's different theories about why, but my point right now is simply that people don't necessarily know this but still they're subject to this.

有很多不同的理论对这种现象进行了解释，不过现在我的看法是,人们并不理解这种现象,但却仍然会这样去做。

耶鲁公开课 - 心理学导论课程节选

and I don't know why I would go to his wedding now.

所以我看不出来现在我为什么要去参加他的婚礼。

I've already 实战 - SpeakingMax英语口语达人

Committee chairman Paul Maskey of Sinn Fein wanted to know why it was now estimated that the buildings survey would take 30 years.

BBC: Public Accounts Committee

At least according to a new letter to customers on the company's front page, we now know why.

ENGADGET: Matrix One pins troubles on part delays and Google Wallet freeze, says refunds coming

Thanks to Advertising Age, we now know why General Motors pulled all of its paid ads from Facebook: The automaker wanted bigger, flashier ad formats than the social network was willing to provide.

FORBES: Why Facebook Won't Just Give Advertisers Like GM What They Want