坐視不理

坐视不理
zuòshìbùlǐ
to sit and watch, but remain indifferent (idiom)

CEDICT

袖手旁观，不理不睬

維基詞典

Entry Composition

1 坐視 zuòshì to stand by and watch; to look on passively
2 不理 bùlǐ
  1. to refuse to acknowledge
  2. to pay no attention to
  3. to take no notice of
  4. to ignore