There is a longstanding prostitution trade in the port.

这个港口的卖淫业由来已。

People have long dreamt of an egalitarian society.

人们梦想有一个平等的社会，由来已。

This is an evil of long standing.

这弊端由来已。

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

课室里的「小班榨」正在倾听祖先由来及传说；讽的是，柱上的木雕居然仿自非洲文化。

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.

罗马军化由来已，是一个渐进性、历时性的过程，3世纪罗马军化步伐加快是其必然结果。