新的方案当然是要减少劳力费用和劳力问题。
The new approach, of course, is to reduce labor costs and problems .
把水放入几块畦田比放人许多灌水沟或垄沟花费的劳力要少，这就补偿了平整土地的费用。
The cost of land leveling is offset by the low labor requirement for turning water into a few border rather than into many furrows or corrugations.
该隔膜泵自动控制系统不但可以提高控制精度和可靠性，减少故障发生率，节约维修成本，还可减轻劳动强度、节省劳力、降低维修费用等。
This system not only can improve precision and reliability, but also can deduce the frequent failure, save the maintenance cost, decrease the labor intention and cost etc.
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