complex problem 的近义词 24 个

• gordian knot
• pandora's box
• complexity
• complication
• difficult situation
• difficulty
• dog's breakfast
• entanglement
• hard nut to crack
• headache
• hornet's nest
• hot water
• mare's nest
• mess
• predicament
• problem
• quagmire
• quandary
• snafu
• snake pit
• snarl
• trouble
• troublesome problem
• unpredictable situation