"I have a dream that my four little children will one day live in a nation where they will not be judged by the color of their skin but by the content of their character.

VOA: special.2010.04.16

I don't know what it takes to replicate that in China, but I certainly hope one day there will be a place in China that looks like Silicon Valley.

无法想象如何在中国复制一个硅谷，但我希望在将来,中国会有类似硅谷的地方。

斯坦福公开课 - 百度CEO李彦宏演讲：全球最大搜索引擎的发展课程节选

and then one day I'll be like, "Oh, I want to dress like a clown today, so I will."

而可能有时候，我想，“喔，今天我想打扮成一个小丑，然后我就这么做了。”

时尚让人兴奋 - SpeakingMax英语口语达人

"I do plan to return to golf one day, I just don't know when that day will be."

VOA: standard.2010.02.19

One day I am stuck. Who will help Tony the tow truck?

如果有一天我动不了了，谁来帮助托运车托尼？

耶鲁公开课 - 文学理论导论课程节选