mumbo-jumbo

 Longman Dictionary of Contemporary English 5++朗文当代英语 5++LDOCE 5++朗文 5++mum·bo-jum·bo /ˌmʌmbəʊ ˈdʒʌmbəʊ $ -boʊ ˈdʒʌmboʊ/ noun [uncountable] informal  UNTRUEtechnical language that is difficult to understand and seems to have no sense 晦涩难懂的文字 a bunch of legal mumbo-jumbo 一大堆晦涩难懂的法律术语

Examples from the Corpus

mumbo-jumbo• You can't do, not when you've been at pains to tell me what rubbish all this astrological mumbo-jumbo is.• legal mumbo-jumbo• Meaningless mumbo-jumbo designed to stall and delay.• Plotinus wrote his most impassioned tract to attack Gnosticism as pretentious mumbo-jumbo.• His daughter Amanda sat at his bedside in stiff, pout-lipped profile, reading some piece of religious mumbo-jumbo.• All of this mumbo-jumbo masks a large vacuum of uncertainty.Origin mumbo-jumbo (1700-1800) Mumbo Jumbo name of a supposed African god

mum·bo-jum·bo nounChineseSyllable  

and to understand is seems that Corpus difficult language technical

mumbo-jumbo
mum‧bo-jum‧bo /ˌmʌmbəʊ ˈdʒʌmbəʊ $ -boʊ ˈdʒʌmboʊ/ noun [uncountable] informaltechnical language that is difficult to understand and seems to have no sense:
    a bunch of legal mumbo-jumbo