An extensive international fleet of small warships is currently patrolling the Gulf of Aden.

VOA: standard.2009.10.30

I don't think I know anyone who had an extensive experience in the war.

我觉得我认识的人当中,没有人在战争中有很多的经历。

普林斯顿公开课 - 人性课程节选

We have got an extensive subway system and an extensive bus system that we have had for 60, 70 years.

我们有大规模的地铁系统和巴士系统，它们已经有差不多六七十年的历史了。

纽约的公共交通 - SpeakingMax英语口语达人

In practical terms,experts say, this will require the extensive upgrading of an aging infrastructure put in place before the ADA was came into being.

VOA: standard.2010.07.27

It's an anthology of writings or books written and edited over an extensive period of time by people in very different situations responding to very different issues and stimuli, some political, some historical, some philosophical, some religious, some moral.

是书籍文献的选集,由许多人在一段相当长的时间里,在各种各样的环境下,对不同的事件做出回应而写成的，政治的，历史的，哲学的，宗教的，道德上的，无所不有。

耶鲁公开课 - 旧约导论课程节选

which is basically an extensive number of classes that everybody has to take if you're in Columbia College,

基本包含了大量的课，而且每个哥伦比亚的学生都要上，

哥伦比亚大学的教程 - SpeakingMax英语口语达人

It doesn't require an extensive cultural history.

它无需深远的文化史

耶鲁公开课 - 心理学导论课程节选