随着农业机械迅猛增长，大量的原来从事手工劳动的农民转变为机械操作手。他们之中一些人由于重视学习，并在多年机械使用过程中积累了较多的经验，机械使用的比较好；但大量机手由于缺乏基本理论知识，平时又不注意学习，只会开车，不会保养和维修，使机车常年带病运行。... With the rapid growth of agricultural machinery, a large number of peasants who were originally engaged in manual labor turned into mechanical operators. Some of them, due to their emphasis on learning, have accumulated more experience in years of mechanical use and are better equipped to use machinery. However, due to a lack of basic theoretical knowledge, they usually drive but do not study normally. Will be maintained and repaired, locomotive running perennial disease. ...