一般指知识青年到农村、到山区、到边疆去参加农业生产，经受劳动锻炼。如： 凤田 初中刚毕业，正在这时， 毛主席 号召知识青年上山下乡， 靳大娘 就给他报了名。

1.go to the mountainous areas and the countryside; go and work in the countryside and mountainous areas; go to the mountainous and rural areas; settle in the rural areas [the countryside]; go on trips to hilly and rural areas