n any mechanical or electrical device that transmits or modifies energy to perform or assist in the performance of human tasks
n an efficient person
n an intricate organization that accomplishes its goals efficiently
n a device for overcoming resistance at one point by applying force at some other point
n a group that controls the activities of a political party
n a motor vehicle with four wheels; usually propelled by an internal combustion engine
v turn, shape, mold, or otherwise finish by machinery
v make by machinery
n. 机器；机械（machine的复数）