先例的英文：
antecedent
precedent

参考例句：

It is a unique episode, without example in maritime history.
在航海史上没有先例的独特事件。

There is not only logic to this argument but precedent, too.
这不仅在逻辑上有过争议，而且也有过先例。

Longstanding precedent counseled that the Court ought to defer to Congress on the policy aspects of copyright law.
长期以来，判决先例表明在著作权方面的政策上，法院应当尊重国会的工作。

To act in contrary to precedents
违背先例

This decision creates a dangerous precedent.
这个决定开创了一个危险的先例。

The tribunal's ruling have establish a precedent.
该法庭的裁决确立了一个先例。

There are few precedents for this sort of retroactive legislation.
这种有追溯力的法规鲜有先例。

There are some who will try to pervert this precedent.
有些人将会试图曲解这种先例。

"a rule or principle of law, especially when established by precedent."
尤其由先例形成的法律的原理、规则.

Both formations provide instructive early examples of integration
两者的成立提供了一体化的有益的先例。

antecedent是什么意思：
n. 前情，前身；先行词；祖先
adj. 在先的，先行的

antecedent debt
先前的债项

This is an antecedent of the war.
这是战争的前因。

Creative thinking is the antecedence of design.
创新性设计，必须有创新性思维。

It hides in the prototypic scenario of the antecedent.
它隐藏于先行词的典型场景之中。

This is called the antecedent of a conditional statement.
这被称为条件句前提。

precedent是什么意思：
n.
[U,C]
1. 可援用参考的具体例子；实例；范例
2. 先前出现的事例；前例；先例
[U]
1. 传统；常例；常规

Men have precedency.
男性有优先权。

It's the calm that precedes a storm.
这是暴风雨到来前的平静。

This decision creates a dangerous precedent.
这个决定开创了一个危险的先例。

serve as a precedent for sth
为某事物提供范例

M precedes n in the alphabet.
在字母表上m在n的前面。