Erotic paintings also became a fine art.是什么意思？

Erotic paintings also became a fine art.

色情画也变成了一种艺术。

erotic

adj. （引起）性欲的，色情的；adv. 引起性欲地；n. 好色之徒；

例句
Some men are aroused when their partner says erotic words to them.
有些男人在性伴侣对他们说撩人情话时会被激起性欲。

paintings

n. 上油漆( painting的名词复数 )，作画，（一幅）水彩画，涂漆；

例句
Several magnificent oil paintings adorn the walls.
几幅恢宏的油画装点着墙面。

also

adv. 也，同样，并且；conj. 另外；

例句
The media have also abetted the feeling of unreality.
媒体也在一旁对这种非现实感推波助澜。

became

v. 变为，成为（ become的过去式 ）；

例句
It became very clear that the incident was not just an aberration, it was not just a single incident.
事实已经很清楚，这件事不是偶发的，它并不是一起孤立的事件。

fine

adj. 好的，上等的，纤细的，精致的，健康的，晴朗的；n. 罚款，[音乐]终止，晴天，地租；vt. 罚款，澄清；adv. 很好地，巧妙地；

例句
This is a fine book; a worthy addition to the Cambridge Encyclopedia series...
这是一本好书，对剑桥百科全书系列是一个很好的补充。

art

n. 艺术，艺术作品，（需要技术、工艺的）行业，文艺（包括绘画、雕塑、建筑、音乐、舞蹈、戏剧、文学等）；vi. thou art 即 you are,对一人讲话时用；adj. 艺术的，（为）艺术家的，艺术品的，具有艺术性的；vt.& vi. [口语]（把…）装饰得古色古香，（把…）装饰得古怪而有艺术趣味，把…装饰得有艺术价值，把…加以艺术乔装，使艺术化[仅用于 art up 短语中]；

例句
When not producing art of his own, Oliver was busy advancing the work of others.
奥利弗在不搞自己的艺术创作时，就会忙着帮助别人完成作品。