工人们正在平整路面以便铺沥青。

The workers are ___levelling the road surface before laying asphalt.

政府出台的新法规旨在通过缩小工资差距来促进社会公平。

The new government regulations aim at ___levelling wage gaps to promote social equality.

政府正在征收税款以促进经济增长。

The government is ___levying taxes to boost economic growth.