1 involving a lot of work or care in a short period of time 密集的；深入细致的: an intensive investigation/course 深入细致的调查；速成课程

2 (used about methods of farming) aimed at producing as much food as possible from the land or money available （指耕作方法）集约的；精耕细作的: intensive agriculture 集约农业 ☞Compare extensive. 与extensive比较。 ➔intensively adv