High financial cost is one of the main reasons which cause low operation efficiency of sewage treatment plants and even no operation.

污水处理厂财务成本较高是造成污水处理企业运行效率低、甚至不运行的主要原因之一。

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Insufficient funds lead to poor maintenance, low efficiency of operation and operating deficits.

资金的不足导致缺乏维护、运营低效率和运营赤字。

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Hydraulic performance of advanced machine, high efficiency, low noise operation.

水力性能先进，整机效率高，运转噪音低。

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Efficiency and low operation overheads are central to the airline's business model, according to McCall.

CNN: EasyJet Moscow route will attract business travel