What is the Mandarin equivalent of Cantonese's 麻麻地 (so-so)?
麻麻地 (Cantonese)


  麻麻地 http://www.cantonese.sheik.co.uk/dictionary/words/1503/
  
  so-so; not too good, not too bad; ho-hum; middling.
  
  Example: 佢嘅英文麻麻地 (his English is just so-so)


普通/ 普普通通


  普通 http://www.cantonese.sheik.co.uk/dictionary/words/2782/
  
  ordinary; general; average; standard; common
  
  Example:他的英文程度算是普普通通 (his English level is considered average)


一般 


  一般 http://www.cantonese.sheik.co.uk/dictionary/words/1495/
  
  [1] ordinary; common; general
  
  Example:他的英文程度一般 (his English level is just average)



The term '麻麻' came from '馬馬虎虎'



  馬馬虎虎 http://www.cantonese.sheik.co.uk/dictionary/words/41049/
  
  careless; casual; just passable; so-so
  
  Example: 他的英文只是馬馬虎虎的程度 (his English is only at a so-so level)