普及的英文：
widespread
popular
universal
ubiquitous

参考例句：

popularize science
使科学通俗化,普及科学

Democracy permeates the whole country.
民主主义(的思想)普及全国。

Spoil(sth)by making it too ordinary or well known;popularize
使(某事物)俗气、庸俗化或通俗化;普及.

The English language boom stems from a variety of sources: weald trade, diplomacy, pop culture, science and so on.
英语的迅速普及是有各种根源的，世界贸易、外交、大众文化、科学等等。

To disseminate widely;popularize.
使普及广泛传播；使普及。

The popularity of football
足球运动的普及

The goal in the effort to make nine-year compulsory education basically universal has been attained.
实现基本普及九年义务教育

"Make the nine-year compulsory(obligatory, free) education universal"
普及九年制义务教育

Popularize new theories in medicine
普及医学新理论

Portable telephones are very popular nowadays
现今，移动电话非常普及。

widespread是什么意思：
adj. 普遍的；广泛的

Food shortages are widespread.
食物短缺的情况很普遍。

The whisper about her marriage is widespread.
有关她婚姻的传闻流传很广。

His policies invited widespread criticism.
他的政策招致广泛的指责。

popular是什么意思：
adj. 流行的；受欢迎的；通俗的；大众的，普及的

He speaks in popular language.
他用通俗的语言讲话。

He was not a popular type.
他并不是一个普通的类型。

This drama serial is very popular.
这部连续剧很受欢迎。

universal是什么意思：
adj. 普遍的，共同的；广泛适用的

universal bevel
通用斜角规

Our university is tied up with an American University.
我们大学和一所美国大学有密切联系。

A proctor's assistant at Oxford University or Cambridge University.
牛津大学或剑桥大学里学监的助手。