| 释义 |
〔bulldozer〕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，前部有宽的液压铲刀〔engine〕Such a machine distinguished from an electric, spring-driven, or hydraulic motor by its use of a fuel.燃料发动机：因其使用燃料而与电动、发条驱动或液压发动机而区别的机械装置〔head〕The pressure exerted by a liquid or gas:液压，气压：液体或气体产生的压力： |