難怪不得

难怪不得
nan²guai⁴bu²de²
  1. (Sichuanese) no wonder; small wonder
  2. no wonder; small wonder

Wiktionary

Entry Composition

1 難怪 nánguài
  1. (it's) no wonder (that...)
  2. (it's) not surprising (that)
=2 不得 bùdé
  1. must not
  2. may not
  3. not to be allowed
  4. cannot
=2 不得 bude complement placed after a verb to express impossibility or inability; cannot; be unable to