When you build a road, you need a lot of machines. First, the ground is prepared. Then the grader comes and smoothes the layer of gravel—the grader looks like an insect! Next, the asphalt paver comes and spreads the black, hot asphalt. Finally, the heavy roller goes back and forth. Soon, the cars can drive again.
When you build a road, you need a lot of machines. First, the ground is prepared. Then the grader comes and smoothes the layer of gravel—the grader looks like an insect! Next, the asphalt paver comes and spreads the black, hot asphalt. Finally, the heavy roller goes back and forth. Soon, the cars can drive again.