求翻译：合同有效，被告Billy应按原价将车卖给原告Jimmy，Billy发出卖车邀约给Jimmy，Jimmy接受并同意用现金的形式支付买车的钱。虽然吉米的信是在邮寄过程中丢失。但根据承诺寄出就生效则，并不影响合同的有效性是什么意思？

The contract is valid, billy the defendant should be the original price the car sold to the plaintiff jimmy billy issue selling cars solicitation to jimmy, jimmy accept and agree to pay to buy a car money in the form of cash. Jimmy's letter is lost in the mail. However, according to the commitment t

Contracts should be effective, the defendant Billy price to sell the vehicle, the plaintiff Jimmy Billy issued a solicitation to sell cars, Jimmy Jimmy accept and agree to the form of cash payments of money buying a car. While Jimmy's letter is lost in the mailing process. However, in accordance wit

The contract is effective, defendant Billy should sell to according to the initial cost the vehicle plaintiff Jimmy, Billy to send out sells the vehicle to invite to Jimmy, Jimmy accepts and agreed buys vehicle with the cash form payment the money.Although Jimmy's letter is loses in the mail process

Valid contract, and accused Billy of the price sold the car issue sold Jimmy,Billy vehicles to Jimmy,Jimmy accepting of solicitation and the plaintiff agreed to pay to buy a car in the form of money in cash. While Jimmy's letter is lost in the post. But sent out according to the commitments entered

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