adj.广泛的；广阔的；广大的；大量的
I have benefited a lot from extensive reading. 广泛的阅读使我受益匪浅。
The teacher had both extensive knowledge and profound scholarship. 先生的学问博大精深。
The mansion has extensive grounds. 这大厦四周的庭园广阔。
There is already an extensive cooperative medical service. 合作医疗已经有了广大的发展。
It is impossible to vanquish so strong an enemy without making an extensive and long-term effort. 现在要战胜这样一个强敌，非有长期的广大的努力是不可能的。
There is now extensive literature dealing with the First World War. 现有大量关于第一次世界大战的文献。
adv.广泛地；大规模地
n.广大；大范围；延伸
adj.有共同边界的；有同样范围的
