precursor

名词 precursor:

1. a substance from which another substance is formed (especially by a metabolic reaction)
2. a person who goes before or announces the coming of another
   同义词：forerunner
3. an indication of the approach of something or someone
   同义词：harbinger, forerunner, herald

1. The precursor of the modern car was a horseless carriage with a petrol engine.
   现代汽车的前身是不用马拉的，装有汽油发动机的车子。
2. Opposition by colonists to unfair taxation by the British was a precursor of the Revolution.
   殖民地居民对英国不公正税收的反抗预示着革命的到来
3. British poet considered a precursor of romanticism. His best-known work, The Task(1785), praises rural life and leisure.
   科伯，威廉1731－1800英国诗人，被认为是浪漫主义的先锋。他的最杰出的作品任务赞美了农村生活和休闲

pre.cur.sor

n.（名词）
One that precedes and indicates, suggests, or announces someone or something to come:
先兆：先于并暗示、表明或宣告某人或某事到来的人或事：
例句：
Opposition by colonists to unfair taxation by the British was a precursor of the Revolution.
殖民地居民对英国不公正税收的反抗预示着革命的到来

One that precedes another; a forerunner or predecessor:
前任：先于另一人的人；先锋或先行者：
例句：
Her precursor as school principal was an eminent educator.
她任校长前是一位卓越的教育家

A biochemical substance, such as an intermediate compound in a chain of enzymatic reactions, that gives rise to a more stable or definitive product:
前体：生化物质，如一连串酶反应中的中间化合物，可形成更稳定或明确的结果：
例句：
a precursor of insulin.
胰岛素前体

来源：
Middle English precursoure
中古英语 precursoure
from Old French precurseur
源自 古法语 precurseur
from Latin praecursor
源自 拉丁语 praecursor
from praecursus [past participle of] praecurrere [to run before]
源自 praecursus [] praecurrere的过去分词 [超前于…]
prae- [pre-]
prae- [前缀，表.先于….]
currere [to run] * see kers-
currere [进行] *参见 kers-