on a wing and a prayer
毫無根據地承擔重大任務或挑戰，幾乎沒有希望成功或幸運支持
口語·表達僥幸成功或冒險嘗試
英文釋義
trying to achieve something with very little chance or hope of success
例句
The team finished the project on a wing and a prayer, just barely meeting the deadline.
典故來源
源自二戰時期飛行員在飛機受損后僅靠機翼和祈禱勉強飛行，比喻在極低概率下冒險嘗試。