ammunition
/ˌæmjuˈnɪʃn; ˌæmjə`nɪʃən/ n[U]
1 supply of bullets, bombs, grenades, etc fired from weapons or thrown 弹药
They had to meet the attack with very little ammunition. 他们不得不以极少的弹药应战.
2 (fig 比喻) facts and reasoning used in trying to win an argument 用於争论中的事实和论据
This letter gave her all the ammunition she needed. 这封信给她提供了她所需要的一切论据.