land表示土地、陆地时不可数，表示国家、地区时可数。
land：n.陆地；大地；(尤指某类型或作某种用途的)地带，土地；地产；地皮
相关介绍Many people leave the land to find work in towns and cities.
（图片来自网络侵删）
许多人离开农村到城镇里找工作。
The pilot was given clearance to land by air traffic control.
飞行员得到空中交通管制站发出的着陆许可。
Many younger people are leaving the land to find work in the cities.
许多年轻点的人陆续离开农村到城市去找工作。
