high and low
到处寻找或搜索
口语·强调到处寻找
英文释义
everywhere; in all places
例句
I searched high and low for my keys but couldn't find them anywhere.
典故来源
字面意为“高处和低处”，源自人们寻找物品时会翻遍所有角落，强调彻底搜索。