Two weeks ago, sixteen year old Stacy performed a poem about the attack on the World Trade Center in New York City in two thousand one.

VOA: special.2009.04.17

We talked about two weeks ago, that if you had a population of cells, you could grow those population of cells and you could make, if they adapted the culture properly, you could make an infinite number of cells from one starting solution.

两周前我们讲到,如果你有一群细胞,你可以使细胞数量增长,如果培养得当,你可以,从开始的营养液中制造出无限数量的细胞

耶鲁公开课 - 生物医学工程探索课程节选

So we had two weeks like about... Three weeks ago, we had like a big heat spell.

所以我们已经有两个星期像这样了……三个星期前，我们有一个持续高温的时期。

关于伦敦的天气 - SpeakingMax英语口语达人

We talked about antibodies, we talked about them two weeks ago, we talked about them in section last week, uses of them.

我们讨论过抗体,我们在两周前讨论了抗体,上周的组会中我们讲到抗体的应用

耶鲁公开课 - 生物医学工程探索课程节选