拥护者认为开放源代码软件更安全，购买价格及维修成本也更为低廉，并且更容易定制。
Supporters say open source software is more secure, cheaper to buy and maintain and easier to customize.
长期来看，非一次性产品的价格较低，但维修成本较高。
Nondisposable products are less expensive in the long term but can be costly to repair.
由于燃料价格和维修成本增加，该公司盈利最多的国际快递业务增长放缓。
Growth slowed in international express deliveries, the company's most profitable business, while fuel and maintenance costs increased.
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