calluses

例句:

• Labor left him a black face, hands and gradually Mochu of calluses.
  劳动给他留下了一张黝黑的脸, 双手渐渐地磨出了老茧.
  
• The inducement conditions of the calluses were studied.
  对其愈伤组织诱导条件进行了研究.
  
• But calluses are another matter.
  可足茧问题就没那么容易克服了.
  
• H. has developed calluses from the incessant scratching.
  来自NEWYORKER
• Editors have...to develop enormous calluses at every point of contact with authorship.
  来自fig.
• So dormant was Mr. Clapton's interest in the guitar that he lost the calluses on the fingertips of his fret hand.
  来自WSJ