[, ] () the period of time that you can use an asset such as a machine or vehicle before it is worth buying a new one to replace it经济寿命，经济年限（一项资产，如机器或车辆等的使用年限）◆The period of the loan will depend on the economic life of the asset being financed.贷款期限将取决于得到融资的资产的经济寿命。SYNuseful life