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胼手胝足
pián shǒu zhī zú
  1. 1 with callouses on hands and feet (idiom)
  2. 2 to work one's fingers to the bone
胼胝
pián zhī
  1. 1 callus
胼胝体 | 胼胝體
pián zhī tǐ
  1. 1 corpus callosum