维修费主要贵在人工,而不是零件。
The cost of the repair is high mainly due to the ___labor, not the parts.
这个建筑项目需要大量的熟练劳动力。
The construction project requires a significant amount of skilled ___labor.
自动化减少了许多工厂对体力劳动的需求。
Automation has reduced the need for manual ___labor in many factories.