N-UNCOUNT
无用的东西;质量低劣的东西
If you refer to something as muck, you are emphasizing that you think it is of very bad quality.
例句
He hasn't eaten anything for days. And are you surprised, when this muck is all I have to give him?...
他已有好几天没吃东西了，可我只能给他这种垃圾一样的东西，你奇怪吗？
The script is utterly banal. It is incredible that human minds can put such muck on to paper.
这个剧本是十足的平庸之作，难以想象有人会写出这样的垃圾。