我们增加预付金额，这样一来就只有那些资金最雄厚的公司才能和我们竞争这份合同。
We raised the ante so that only the richest companies could compete with us for the contract.
结果表明：实行以大服务包为主的保偿制是可行的，也是受欢迎的，预付金额宜在230～262元之间。
The results showed that large - package prepayment scheme is feasible and popular, and the prepayment for them should be between 230 - 262 R. M. B. Yuan.
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