Words and Phrases
variety n.[U]多样化；变化；多变性[C](植物、语言等的)变种；品种
(教材原句P56)As the world's first national park，Yellowstone is famous for the variety of its wildlife，but it is probably best known for its bears.
作为世界上第一个国家公园，黄石国家公园因园内野生生物的多样性而著名，但最为出名的可能是公园内的熊。
[例] Different varieties of English is spoken all over the world but they have a lot in common.
全世界各地说着各种类型的英语，但是他们有很多共同点。
