先于的英文：
antecedent to
anterior to
Before
in advance of

参考例句：

Debenture holder have priority over ordinary shareholder.
公司债券持有人有优先于普遍股东的权利。

timeliness is important as it defines the response-time criterion in advance of the system's implementation.
及时性很重要，因为它规定了先于系统运行作出反应的时间标准。

Sometimes copies are mass-produced so quickly that they reach the stores even before the original designs.
有时仿制品批量生产的速度快到甚至会先于原设计的服装上市。

I believe that theories are prior to observations as well as to experiments.
我认为理论先于观察，也先于实验。

The we should always precede the I.
集体总应先于个人。

She priceded him out of the room.
她先于他走出屋子。

New arrivals please report to reception before parking.
来宾停车前请先于接待处报到

Eldest son is preferentially all sister-in-laws on the right of succession.
在继承权上长子优先于诸弟妹。

He always put the interests of others before his own.
他总把他人的利益优先于自己的。

Constitution is prior to all other laws.
宪法优先于其他一切法律。

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。

anterior是什么意思：
adj. 前部的；先前的；在前的

Ages anterior to the flood.
诺亚洪水以前的时代。

Love is anterior to life, posteripr to death.
爱情早于生命，晚于死亡。

Lumbricidae have the clitellum on the anterior part of the body
正蚓科的生殖带位于身体的前部。

before是什么意思：
prep. 在…之前；优于，先于；当面
conj. 在…之前
adv. 先前，从前

Rain before seven;fine before eleven
雨过天晴

They corned their horses before the journey.
他们在启程前用玉米喂马。

The army was arrayed before the commander.
部队在指挥官前列好阵势。