[, ] () the act of making a contract, etc. valid for a further period of time after it has finished（对合同等的）有效期延长，续订，展期，更新◆The insurance policy is coming up for renewal.保单该办理展期了。◆software license renewals软件许可证更新a situation in which sth is improved or made more successful更新；改进；振兴；复兴◆economic renewal经济复兴◆The new model is part of an ongoing product renewal.这一新型号是正在更新的产品中的一种。