1.To make a valid contract, generally speaking, we need at least two parties both have to have legal "capacity" .
一般而言，为订立一份有效合同，至少需要两方当事人；
2.At a minimum, the existence of a contract would serve as an authorization check; without a valid contract, the service cannot be invoked.
最低限度，合同的存在将起到授权核查的作用；如果没有有效的合同，将不能调用服务。
3.For a agreement to be a valid contract, the contracting parties must have legal capacity to enter into transactions.
如果一个协议要成为一个有效的合同，合同的各方必须具有进行交易的法定行为能力。
4.For an agreement to be a valid contract, the contracting parties must have legal capacity to enter into transactions.
为了让契约成为有效的合同，签订合同的双方必须具有参加交易的法律行为能力。
5.The valid contract for the trademark expired in two years, Wahaha said.
娃哈哈称，关于商标权的有效合同已在两年内到期。
6.He says the document is a valid contract that entitles him to an 84 percent stake in Facebook.
保罗说这是一份授予他Facebook84%股份的有效合同。
7.A sales order becomes a valid contract, only if it is confirmed in writing by WIRTGEN CHINA.
仅在WIRTGENCHINA书面确认的情况下，销售定单方能构成有效的合同。
8.Does the plant maintain valid contract with hazardous waste disposal contractor?
工厂与危险废物承包商的合同是否在有效期内？
9.When there is no meeting of the minds , there is no valid contract.
如果没有合意，就没有有效的合同。
10.then why is the contract valid contract?
那么该合同为什么是有效合同呢？