Taivo A Taiwan Mandarin dictionary

凸起

túqǐ

ㄊㄨˊ ㄑㄧˇ

  1. 1convex
  2. 2protruding
  3. 3to protrude
  4. 4to bulge
  5. 5to buckle upwards

Keep 凸起 and it comes back until you know it.

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