1 if there is a mess somewhere or a place is a mess, things there are dirty or not neatly arranged 凌乱,脏乱 singular 单数, U | BrE :
DIRTY/UNTIDY
脏的/凌乱的
2 a situation in which there are a lot of problems and difficulties, especially as a result of mistakes or carelessness 〔尤指因错误或疏忽所造成的〕麻烦,困境,混乱 singular 单数, U
PROBLEMS/DIFFICULTIES
问题/困难