1. 释义：平行线；相似性，共性= similarity
2.例句：
上海和纽约之间有很明显的相似性。
There are many striking parallels between Shanghai and New York City.
3. 造句：
这本书主要写的是传统出版业和数字出版业之间有趣的相似性。
The book draws interesting parallels between traditional publishing and digital publishing.
有趣的人之间有很多的相似性。
There are many striking parallels among fascinating people.
