"In simple terms, things such as type two diabetes, cardiovascular diseases, infectious diseases of a variety of types, and lung diseases and so on, are all found at higher than the comparison rates within the country, in many of these countries with indigenous populations."

VOA: special.2009.07.20

But practice this, because it's something that's such an easy way to ask such a variety of questions.

但是你仍然需要好好练习，因为这个简单的用法能够提出各种各样的问题。

Where 课堂 - SpeakingMax英语口语达人

There are lots of people who have pointed out to us that before a certain period, there was no such thing as man, and in a variety of quite real senses, after a certain moment in the history of culture, there is also no such thing as man.

很多人向我们指出,在某一特定时间点前是没有人类的，而且在真实意义上，在文化史中的某一特定时刻后，人类也不存在。

耶鲁公开课 - 文学理论导论课程节选

The support troops perform a variety of functions such as mine clearance, equipment servicing, construction,air support, medical services and many others.

VOA: standard.2009.10.13

because in elementary school and junior high, you have such a variety of skill levels and effort levels.

因为在小学和初中，大家的水平和努力程度不同。

怎么协调意见冲突 - SpeakingMax英语口语达人

The riders and horses undergo rigorous training, including how to deal with the public in a variety of situations such as huge crowds of Olympic fans.

VOA: standard.2010.02.25

Also one of the most useful resources you'll find is the course's website; where not only will the obvious be posted like handouts and such, pests in the syllabus, but there will also be a variety of tools that you can turn to over the course of the semester including our own videos.

而且你将发现最有用的资源之一就是课程网站,这里不仅有讲义,教学大纲的错误之处，还有大量课程中使用的工具,包括我们自己的视频等,这对这学习很有帮助。

哈佛公开课 - 计算机科学课程节选