Senses
机关用尽/ 機關用盡 to exhaust every scheme; to rack one's brains
To use up every possible clever plot or cunning strategy; often used in a negative sense to describe someone who has exhausted their wits in pursuit of gain 费尽心机
To use up every possible clever plot or cunning strategy; often used in a negative sense to describe someone who has exhausted their wits in pursuit of gain 费尽心机