疑難雜症 yí nán zá zhèng

DEFINITIONS

  1. dubious or hard-to-treat cases (medicine)
  2. hard cases

CHARACTERS

疑 yí
HSK 4
doubt, question, suspect
難 nán difficult, arduous, hard; unable
雜 zá mixed, blended; mix, mingle
症 zhèng
HSK 6
disease, illness, ailment