基本解釋鏟斗挖泥機(jī)詞組短語(yǔ)短語(yǔ)shovel bucket shovel dipper 挖土機(jī)鏟斗shovel l dipper 挖土機(jī)鏟斗dipper shovel更多詞組專業(yè)釋義經(jīng)濟(jì)學(xué)杓斗鏟