At least two rockets fired from Lebanon crashed into northern Israel, breaking a calm along the border that has prevailed since January.

VOA: standard.2009.09.11

one is to look at the sequence of event, look at these sequence in October 29, stock market crashed, two month later, 9% unemployment peaked at 9%.

一种是看看事件发生的时间，看看顺序,10月29号，股票市场崩溃，两个月后，失业率上升到。

斯坦福公开课 - 经济学课程节选

The aircraft crashed while the 60-year old President Kaczynski was on his way to memorial ceremonies at Russia's Katyn area, where 22,000 Poles were killed by Soviet forces,70 years ago.

VOA: standard.2010.04.10