trial by fire
成語所屬單字trial
trial by fire — 慣用語
1. a situation in which someone must deal with a very difficult challenge for the f
1.慣用語
釋義
嚴峻考驗（指毫無準備就面對的艱難挑戰）
a situation in which someone must deal with a very difficult challenge for the first time, without any preparation or experience to help them
例句
Eitan's first day as a chef was a trial by fire — the kitchen was short-staffed and full of angry customers.