Then there's last September's results of the Thai vaccine trial, which proved a vaccine can offer some protection from infection.

VOA: standard.2010.07.15

As I mentioned at the end of last lecture, what I want to do is offer us a set of thought experiments.

正如我在上一讲最后提到的，我想做一些思考实验。

耶鲁公开课 - 死亡课程节选

Last month, Hamas refused Iran's offer to provide an escort for their aid ship to Gaza following the flotilla attack, saying the Iranian assistance might only complicate the situation.

VOA: standard.2010.07.26

The P5+1 last year presented Iran with a revised offer of incentives for it to halt a uranium enrichment effort U.S.and European officials believe is weapons-related and return to negotiations on its nuclear program.

VOA: standard.2009.06.24

He said the Iranian official told the diplomats that even if Tehran accepted a big power offer of last November to export some of its enriched uranium to be reprocessed as fuel for a research reactor, the broader Iranian enrichment drive would continue.

VOA: standard.2010.05.14