toughened

• That ' s character - building . kid needs to toughen up
  这是性格塑造的时候孩子需要一些磨练
• Basically he needs to toughen up a little bit
  主要是，他需要更强悍点。
• Research and developing of y - zro2 rare - earth toughening ceramics
  2稀土增韧陶瓷的微波烧结
• Progress of toughening modification of rigid pvc in china
  我国硬质聚氯乙烯增韧改性的进展
• Toughening method and mechanism of thermosetting resins
  热固性树脂的增韧方法及其增韧机理
• The situation toughened up in that country
  那个国家的形势更加恶化。
• All this mountain climbing will toughen the boys up
  这些爬山运动会把孩子们锻炼得身强体壮。
• Research development of toughening epoxy resin
  环氧树脂增韧研究进展
• Recent progress in toughening polypropylene
  聚丙烯增韧改性最新进展
• His attitude has toughened up since you last saw him
  自你上次见过他以来，他的态度更强硬了。