ammunition has run out and no aid is forthcoming ❍ 敌军已～，马上包围敌人！ The enemy troops have run out of ammunition and no aid is forthcoming.Close in on them at once!
弹尽援绝援（粮）dàn jìn yuán jué
弹药用完了，后援也断绝了。比喻处境十分困难。the ammunition is gone, and reinforement is nowhere in sight, ammunition has run out and no aid is forthcoming, run short of ammunition and food