The buyer has the option of canceling the contract.
买主有权撤消合同。
You have no grounds for backing out of the contract.
你们没有正当理由背弃合同。
In case one party fails to carry out the contract， the other party is entitled to cancel the contract.
如果一方不执行合同，另一方有权撤消该合同。
Are you worrying about the non-execution of the contract and non-payment on our part？
你是否担心我们不履行合同或者拒不付款？
You cannot cancel the contract without first securing our agreement.
如果没有事先征得我们同意，你们不能取消合同。
This contract will come into force as soon as it is signed by two parties.
合同一经双方签定即生效。
Once a contract is made， it must be strictly implemented.
合同一旦确定就应严格执行。
Words and Phrases
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to bring a contract into effect 使合同生效
to come into effect 生效
to go （enter）into force 生效
to cease to be in effect/force 失效
to carry out a contract 执行合同
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
to honour the contract 重合同
to annual the contract 废除合同
to terminate the contract 解除合同
to alter the contract 修改合同
to abide by the contract 遵守合同
to go back on one's words 反悔
to be legally binding 受法律约束
to stand by 遵守
non-payment 拒不付款
to secure one's agreement 征得……的同意
Additional Words and Phrases
contract price 合约价格
contract wages 合同工资
contract note 买卖合同（证书）
contract of employment 雇佣合同
contract of engagement 雇佣合同
contract of carriage 运输合同
contract of arbitration 仲裁合同
contract for goods 订货合同
contract for purchase 采购合同
contract for service 劳务合同
contract for future delivery 期货合同
contract of sale 销售合同
contract of insurance 保险合同
contract sales 订约销售
contract law 合同法
to ship a contract 装运合同的货物
contractual dispute 合同上的争议
a long-term contract 长期合同
a short-term contract 短期合同
contract parties 合同当事人
contractual practice/usage 合同惯例
contractual claim 根据合同的债权
contractual liability/obligation 合同规定的义务
contractual income 合同收入
contractual specifications 合同规定
contractual terms & conditions 合同条款和条件
contractual guarantee 合同规定的担保
contractual damage 合同引起的损害
contractual-joint-venture 合作经营，契约式联合经营
completion of contract 完成合同
execution of contract 履行合同
performance of contract 履行合同
interpretation of contract 解释合同
expiration of contract 合同期满
renewal of contract 合同的续订
，外贸英语900句之 合同 Contract