经济学人下载:切尔迪好村长拉斯洛·波格丹(4)

They need to expand the number of farmers who are involved if the scheme's going to really take off...
这个方案要想真正成功，他们就需要增加参与的农场主的人数。

2.a range of一些列的

The slim booklets describe a range of services and facilities.
这些薄薄的小册子介绍了一系列服务和设施。