n.引用单元,范例( precedent的名词复数 ),先前出现的事例,前例,先例
There is no lack of precedents in this connection.
不乏先例.
He copied after bad precedents.
他仿效恶例.
There are few precedents for this sort of retroactive legislation.
这种有追溯力的法规鲜有先例。