There is a longstanding prostitution trade in the port.

港口的卖淫业由来。

People have long dreamt of an egalitarian society.

人们梦想有平等的社会，由来。

This is an evil of long standing.

弊端由来。

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

凉亭课室里的「小班榨」正在倾听祖先由来及传说；讽的，亭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.

罗马军队蛮族化由来，渐进性、历时性的过程，3世纪罗马军队蛮族化步伐加快其必然结果。