road scraper การใช้

• In 1993 the experimenters employed road scrapers, plows and disks to scrub the plots ( they had once been farmland ) clean of weeds and invasive species.
• "Bonita "  s captain sought assistance from the local road crew, which put to work carving out with a road scraper a channel in the bar, reportedly just big enough for " Bonita " to pass through.