3N-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. 无用的东西;质量低劣的东西 [informal, disapproval]
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.