Taivo A Taiwan Mandarin dictionary

凹凸不平

āotúbùpíng

ㄠ ㄊㄨˊ ㄅㄨˋ ㄆㄧㄥˊ

  1. 1(idiom) uneven (surface); bumpy (road)

Keep 凹凸不平 and it comes back until you know it.

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