柯林斯词典underseal /ˈʌndəˌsiːl/ [英國英語] 1. N a coating of a tar or rubber-based material applied to the underside of a motor vehicle to retard corrosion (給車底塗的)防水材料 (US name undercoat)2. V to apply a coating of underseal to (a motor vehicle) (給車底)塗防水材料 返回 under seal