expenses of labor

例句：

1. 1. The construction project has increased the expenses of labor significantly.
   这个项目增加了劳动力的开支。
2. 2.The company is looking for ways to reduce the expenses of labor.
   公司正在寻找减少劳动力开支的方法。
3. 3. The cost of labor has risen due to the increase in demand.
   由于需求的增加，劳动力成本上升了。