of labor

• 劳力波动

of labor的用法和样例：

例句

1. His hard hands and sinewy sunburnt limbs told of labor and endurance.
   他粗糙的双手，被太阳哂得发黑的健壮四肢，均表明他十分辛勤，非常耐劳。
2. I'm a federal employee. I work for the Department of Labor.
   我是联邦政府的雇员，我在劳工部工作。
3. There is a clear division of labor in ants.
   蚂蚁间有明确的分工。
4. It takes a lot of labor to build a railway.
   修筑一条铁路要花费许多劳动力。