不可能三角

bùkěnéngsānjiǎo
  1. (economics) impossible trinity
  2. impossible trinity
  3. trilemma; a set of three things of which only two are possible at the same time

Wiktionary

Entry Composition

1 不可能 bùkěnéng
  1. impossible
  2. cannot
  3. not able
2 三角 sānjiǎo triangle