originals of the contract 合同正本
copies of the contract 合同副本
a written contract 书面合同
contract terms (or contract clause) 合同条款
contract provisions/stipulations 合同规定
contract period (or contract term) 合同期限
contract life 合同有效期
to be stipulated in the contract 在合同中予以规定
to be laid down in the contract 在合同中列明
to bring a contract into effect 使合同生效
to execute/implement/fulfil/perform a contract 执行合同
cancellation of contract 撤消合同
breach of contract 违反合同
to break the contract 毁约
to cancel the contract 撤消合同
to tear up the contract 撕毁合同
to approve the contract 审批合同
performance of contract 履行合同
interpretation of contract
expiration of contract 合同期满
renewal of contract 合同的续订