他说承包商需要了解的是：用轻质材料能节省运输、劳动力和设备费用，以及潜在的维护费。
What contractors need to understand, he said, is that there are transportation, labor and equipment savings from using lighter components, and potential maintenance savings, too.
他说承包商需要了解的是：用轻质材料能节省运输、劳动力和设备费用，以及潜在的维护费。
What contractors need to understand, he said, is that there are transportation, labor and equipment savings from using lighter components, and potential maintenance savings, too.
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