noun · money paid to the court to secure a person's temporary release from custody

法官将保证金定为五万元。

noun · money paid as a security or guarantee in a commercial transaction or rental agreement

租房时，租客通常需要支付一个月的保证金。

noun · funds deposited with a broker to cover potential losses in derivative or securities trading

如果账户资金低于维持保证金，你将收到追缴通知。