If you describe something as unsightly, you mean that it is unattractive to look at.
例句
My mother has had unsightly varicose veins for years...我母亲多年来一直患有难看的静脉曲张。The Polish market in Berlin was considered unsightly and shut down.柏林市内的波兰市场因为被认为有碍观瞻而关闭了。
英汉词典释义
adj.
不悦目的;难看的
His skin was covered with unsightly blotches.他的皮肤上长满了难看的疹块。