one; a; an
(police) of “killing none and arresting few”
一个不杀， 大部不捉
an hour
一个小时
a friend
一个朋友
the idea of “one country, two systems”
“一个国家， 两种制度”的设想
one central task of economic development, two basic points
一个中心， 两个基本点
He is a man of Lei Feng type.
他是一个雷锋式的人物。