前綴proto-詞源，詞義和例子

漢：來(lái)源于希臘語(yǔ),意為“first”。在元音字母前，字母o脫落。意為“first”的詞根有pri(priority),prin(principled),prim(prima donna)等。

英：word-forming element meaning "first," from Gk. proto-, comb. form of protos "first," superlative of pro "before" (see pro-).

1.protagonist
n.chief person in a drama;chief person in a story or factual event.戲劇的主角；小說(shuō)的主人公 agon=struggle
Every movie is the same;there's a good guy and a protagonist he has to defeat.
每部電影都不例外；都會(huì)有一個(gè)好人以及他要戰(zhàn)勝主人公。

2.protocol
n.first or original draft of an agreement,signed by these making it;code of behavior,etiquette as practiced on diplomatic occasions 草案，協(xié)議，行動(dòng)規(guī)約，外交禮節(jié) col=glue

3.prototype
n.first or original example form which others have been or will be copied or developed 原型，模范，樣本 proto=first
General Motors unveiled a prototype of its E-car,an electric car.
通用汽車(chē)公司公布了電動(dòng)車(chē)E-car 的模型。