"They came with a more powerful weapon - hope.

VOA: standard.2009.10.28

Words may well be a powerful weapon, as powerful as a gun.

文字可以是强大的武器，和枪杆子一样硬。

耶鲁公开课 - 政治哲学导论课程节选

Prevention is our most powerful and effective weapon,"

VOA: standard.2009.12.02