公园的长椅上沾满了污秽，没人愿意坐。

The park bench was covered in ___filth, so no one wanted to sit there.

那个电台因为播放低俗内容被罚款了。

The radio station was fined for broadcasting ___filth.

这部电影揭露了城市阴暗面隐藏的道德污秽。

The movie exposes the moral ___filth hidden in the underbelly of the city.