N-UNCOUNT
平庸;平凡;普通
If you refer to the mediocrity of something, you mean that it is of average quality but you think it should be better.
例句
...the mediocrity of most contemporary literature...
大多数当代文学作品的平庸
Fashion today is sloppy mediocrity.
如今的时尚品位低下，平庸无奇。