上确界 上確界 shàng què jiè ㄕㄤˋ ㄑㄩㄝˋ ㄐㄧㄝˋ soeng6 kok3 gaai3

  • supremum (math.)
  • least upper bound

Stroke order

Practice writing

Draw 上 (1 of 3) — stroke by stroke.

Draw each stroke of the character in order using your mouse or finger. A hint appears after three misses.