A vehicle, powered by a gasoline or diesel motor, having large heavily treaded tires, and used in mowing, farming, or other applications.
拖拉机一种以汽油或柴油发动机为动力的车辆，有巨大沉重的履带，用于割草，农耕或其他用途
A diesel submarine is able to cruise under water for a short period of time, but a nuclear one is able to cruise under water much longer.
柴油潜艇在水下只能航行非常短的时间，而核潜艇在水下航行的时间要长得多。
Drawing on their practical experience, they designed an air-cooled diesel motor.
他们利用自己的实践经验，设计了一台气冷柴油机。
