[] () in a contract, a fixed amount of money that sb agrees to pay if they do not do what they have promised违约赔偿金，预定违约金（合同中事先规定违约时应偿付的损失赔偿金）◆If the building is not completed in time, the contractors must pay liquidated damages.如果建筑物未按时建成，承包商必须支付违约赔偿金。