Fears are growing for the safety of a teenager who disappeared a week ago.

大家对那一周前失踪少年的安危越来越担忧。

《牛津词典》

"That's the time you weren't well, wasn't it?"—"Yes, that's right, that was a week ago last Monday."

“就是那个时候你不舒服，是吗？”——“是的，就是一周前的星期一。”

《柯林斯英汉双解大词典》

The president now seems a more chastened and less confident politician than when he set out a week ago.

总统现在看起来是一个比一星期前刚就任时更多历练、更少自信的政客了。

《柯林斯英汉双解大词典》

Tunisia is observing three days of mourning for people killed in the revolution that ousted the president a week ago.

VOA: special.2011.01.22

Well we start with the ideas we learned already several weeks ago now, or more than a week ago, which is the idea of dominant strategies.

我们可以运用到几周以前,还是一周以前学到的知识,使用优势策略的观点来分析

耶鲁公开课 - 博弈论课程节选

So I just have to see, oh, here's a D, let me keep looking, D here's an A, keep looking here's a V, here's an I, here's a D and yet, and this is one tidbit we introduced a week or so ago, how do I now know if I'm just given the address of the start of the string where the end is?

我只需要看到，哦，这里是一个D，让我接着往下看，这里是A，接着这是V，这是I，这是,然而，这是我们一周以前介绍的花絮，如果你给我一个字符串开始的地址,我怎么知道它什么时候结束？

哈佛公开课 - 计算机科学课程节选

He took questions on it from you guys less than a week ago on Friday.

WHITEHOUSE: Press Briefings

As I reported just over a week ago, Theresa May wanted to dismantle the SFO.

BBC: SFO saved by cabinet revolt

Shares of Capital One Financial are up more than 13% from their close a week ago.

FORBES: Selling Pressure Hitting Credit Card Stocks