fit the bill
符合需求或要求，适合特定目的或条件
口语·表示符合条件
英文释义
to meet the requirements or expectations; to be suitable or appropriate for a particular purpose or situation
例句
We need a cheap laptop for school, and this one fits the bill perfectly.
典故来源
源自19世纪剧院，指演员符合角色要求，后泛指满足需求。