duàn liàn
HSK 2.0 等级 3 HSK 3.0 等级 4

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释义

  1. 1. to toughen
  2. 2. to temper
  3. 3. to engage in physical exercise
  4. 4. to work out
  5. 5. (fig.) to develop one's skills
  6. 6. to train oneself