maintenance charges的用法和樣例：
例句
- Open standards are being embraced by enterprises as a means to drive down high integration and maintenance costs.
開放式標準被企業用作降低高整合及維護費用的主要手段。 - Increasing loading of equipment, decreasing maintenance expenditures and postponement of investments are goals to reduce life cycle costs.
增加設備的負荷，降低維護費用以及延緩投資都是降低使用壽命成本的目的。
