由来

This is an evil of long standing.

这弊端由来已久。

There is a longstanding prostitution trade in the port.

这个港口卖淫业由来已久。

People have long dreamt of an egalitarian society.

人们梦想有一个平等社会，由来已久。

The little bancha are listening to the legends of their ancestors' origins. Ironically, the carvings on the pillars are actually copied from Africa.

凉亭课「小班榨」正在倾听祖先由来及传说；讽是，亭柱上木雕居然仿自非洲文。

The barbarization of Roman army had a long history and was a gradual and lasting process, so the pace of barbarization of army steeping up was an inevitable product.

军队蛮族由来已久，是一个渐进性、历时性过程，3世纪军队蛮族步伐加快是其必然结果。