先行的英文：
antecede
precession

参考例句：

Speaking of constitutions, the bourgeoisie was the forerunner
讲到宪法，资产阶级是先行的。

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

You must give way to betters.
你必须让长者先行。

Used as the antecedent of a relative clause
用作关系从句的先行词

Electric power is the antecedence to the development of the national economic.
国家经济的发展，电力是先行。

You must give way to betters
你必须让长者(上司)先行。

a prequel that featured the characters of the famous novel in their youth.
描述著名小说中青年期的先行篇

A wage agreement in line with current inflation.
和先行通货膨胀相配合的工资协议

Effective defence is a matter of intercept their missile before they can reach us.
有效的防卫是不待对方导弹击中我们而先行将其拦截。

Give a lie twenty-four's start, and you can never overtake it.
让谎言先行二十四小时，你就永远无法追上它。

antecede是什么意思：
v. 先前, 先行

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。

precession是什么意思：
n. 先行,优先,岁差

The tilting of the gyro continues until the erection torque balances the torque producing the precession
陀螺继续倾斜直至修正力矩与产生进动的力矩平衡。

The so-called lunisolar precession is caused by the inequality of the moments of inertia of the earth
所谓日月岁差，是由于地球转动惯量的不相等造成的。

precession is of utmost importance since it causes relatively rapid changes in coordinates d and
岁差之所以特别重要是因为它引起坐标d和б比较迅速的变化。

Another characteristic of sun-earth system is the gradual precession of the equinoxes and solstices along the orbit
日地系统的另一个特点是二分点和二至点沿轨道逐渐运动。