高阶

高階
gāojiē
high level

CEDICT

Entry Composition

1 高 gāo
  1. high
  2. tall
  3. above average
  4. loud
  5. your (honorific)
=2 阶 jiē variant of 阶 jiē
=2 阶 jiē
  1. rank or step
  2. stairs