the fact of many different types of things or people being included in something; a range of different things or people

Does television adequately reflect the ethnic and cultural diversity of the country? 电视节目能充分反映出这个国家民族和文化的多样性吗？

the fact that there are many different ideas or opinions about something

There is a wide diversity of opinion on the question of unilateral disarmament. 对于单方面裁军问题，人们的看法各不相同。