名词pro
pref.anti-
1. （与形容词和名词连用构成形容词）表示“亲”，“支持”，“赞成”
You can add pro- to adjectives and nouns in order to form adjectives that describe people who support or admire a particular person, system, or idea.
e.g. He was at the forefront of the pro-democracy campaign in the country...
他活动在该国亲民主运动的前沿。
e.g. Younger voters are strongly pro-European...
年轻选民是坚定的亲欧派。