ㄉㄢˋㄐㄧㄣˋㄩㄢˊㄐㄩㄝˊdànjìn‑yuánjué

弹尽援绝
  1. 彈藥援助斷絕比喻處境非常艱困 彈盡援絕難以為繼」。

out of ammunition and no hope of reinforcements (idiom)​; in desperate straits