疑难杂症 yí nán zá zhèng

DEFINITIONS

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

CHARACTERS

疑 yí
HSK 4
doubt, question, suspect
难 nán
HSK 3
difficult, arduous, hard; unable
杂 zá
HSK 4
mixed, blended; mix, mingle
症 zhèng
HSK 6
disease, illness, ailment