她站住，望着这朵长长的黄花问道：“也许你知道一件事吧？”

She stood still, looked at the long yellow flower, and asked, "You perhaps know something?"

youdao

无论你相信的是哪个版本的圣诞老人，你只需要知道一件事——圣诞老人居住在格陵兰。

Regardless of which version of Santa Claus you believe in, there is only one thing you need to know—that Santa Claus lives in Greenland.

youdao

从突尼斯到巴林，熟悉网络的活动分子都知道一件事：互联网不是永远安全的。

If there's one thing that net-savvy activists from Tunisia to Bahrain are aware of, it's that the Internet isn't always safe.

youdao

I know you want to get on with life, and you're onto the next thing, and you are tuning out, but you hear all the click, click, click, click, click?

我知道你希望在生活上出人头地，由于弄另一件事上了，后来你又不理会了，你能全部听到嘀嘀的声音？

麻省理工公开课 - 固态化学导论课程节选

so I don't know, I think it's just really cool to be able to work something from the ground up.

所以，我不知道，我就是觉得能从头开始做一件事很酷。

什么是认知科学？ - SpeakingMax英语口语达人

A little while ago there was a sniper, actually a pair of snipers killing people in Washington and the one thing everybody knew about it was there was a white van involved.

几年前出现了一个狙击手，确切地说，是一对狙手在华盛顿作案,大家都知道的一件事是,作案过程中有一辆白色小货车。

耶鲁公开课 - 心理学导论课程节选