基本解释[经济学]除荆机英汉例句双语例句A heavy, driver-operated machine for clearing and grading land, usually having continuous treads and a broad hydraulic blade in front.推土机用来清除和平整土方的重型的，驾驶操作的机器，常有连续的履带，前部有宽的液压。land clearing blade更多例句专业释义经济学除荆机