Israel, facing rocket attacks, began its offensive 2 weeks ago.

VOA: special.2009.01.10

This was a huge number for me up until 2 weeks ago Besides the 100 billion neurons in the brain . there are 12-15 thousand cochlear hair cells.

直到两周前，这对我来说还是个庞大的数字,除了这一兆亿个神经元外,还有12，000到15，000个毛细胞。

斯坦福公开课 - 7个颠覆你思想的演讲课程节选

And then we fostered her for like a couple of weeks.

我们当时养了她差不多2周。

与流浪狗的相遇 - SpeakingMax英语口语达人

In a report published last week, the United Nations says that 2,800 civilians had died in recent weeks, as the army pushed to defeat the rebels.

VOA: standard.2009.03.17