印度尼西亚的一个城市已经决定接受塑料可回收垃圾来代替城市公交车的费用。
One Indonesian city has decided to accept plastic recyclable waste in place of money for city buses.
汽油和石油都是商品，价格是基于代替卖方供应的成本，而不是生产汽油的费用。
Gas and oil are commodities, and the prices are based on the cost to replace a seller's supply, not on how much the gas cost to produce.
Ponsati博士的想法是，如果人类调解人不能受人信任，调节费用过高或是找不到合适的调解人时，这个角色可以由电脑来代替。
Dr Ponsati's idea was that if a human mediator was not trusted, affordable or available, a computer could do the job instead.
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