基本解释刮板式平路機英汉例句雙語例句The simplest type of road, built to carry little traffic, is made by scraping and pushing the earth with a grader.爲擔負少量運輸量而脩築的最簡易的道路是用平地機將地麪推鏟平整而成的。scraping grader更多例句专业释义經濟學刮土平地機