"1.5平方公里" translates to "1.5 square kilometers," which is a unit of area measurement. It represents a space that is 1.5 kilometers long and 1 kilometer wide, or any other combination that results in the same area. This measurement is commonly used in urban planning, land development, and environmental studies. To visualize, 1.5 square kilometers is roughly equivalent to 375 acres. This area could accommodate several parks, sports fields, or even a small neighborhood. Understanding this measurement helps in assessing land use and planning for infrastructure in various regions.