He says the new Obama war strategy, which also includes a major rehaul of civilian development projects, sounds like a hopeful change from the past.

VOA: standard.2009.06.15

Either keep up the good work or you better change your strategy because you are not mastering the material.

保持好的工作,或者你最好改变你的策略,因为你不擅长处理这个材料。

麻省理工公开课 - 固态化学导论课程节选

Senator Kerry said the time had come for a change in U.S.strategy toward Pakistan, with the aim of appealing to the hearts and minds of the Pakistani people.

VOA: standard.2009.05.04

Some centrist Democrats, such as Senator Claire McCaskill of Missouri, also criticized the way the president rolled out the new defense plan, and some questioned the intelligence behind the change in strategy to focus moreon short and mid-range missiles from Iran.

VOA: standard.2009.09.24