adj. 广阔的；广泛的；巨大的，大量的；（农业）粗放（经营）的
词根：extend
adj.
extended 延伸的；扩大的；长期的；广大的
adv.
extensively 广阔地；广大地
n.
extension 延长；延期；扩大；伸展；电话分机
extensiveness 延伸；大范围
v.
extended 延长；扩充（extend的过去分词）
vi.
extend 延伸；扩大；伸展；使疏开
vt.
extend 延伸；扩大；推广；伸出；给予；使竭尽全力；对…估价
1.This TV program, which is about Chinese education, has attracted extensive attention of the society.
这档关于中国教育的电视节目引起了社会的广泛关注。
2.There will be extensive renovations to the hospital.
这所医院将进行大规模的翻修。
3.The local bus service is well run and extensive.
当地的公交线路运营良好，四通八达。
4.The most extensive approach is a full thesaurus.
最广泛的方法是完整的同义词典。
5.Investigations had revealed extensive rot in the beams under the ground floor.
检测显示一楼下面的横梁已经有大面积的腐烂。
6.The story had an extensive popularity among American readers.
这本小说在美国读者中赢得广泛的声望。