基本解釋刮板式平路機英漢例句雙語例句The simplest type of road, built to carry little traffic, is made by scraping and pushing the earth with a grader.為擔負少量運輸量而修筑的最簡易的道路是用平地機將地面推鏟平整而成的。scraping grader更多例句專業(yè)釋義經(jīng)濟學刮土平地機