harden

1. V-ERG （使）变硬;（使）硬化
   When something hardens or when you harden it, it becomes stiff or firm.
   1. Mould the mixture into shape while hot, before it hardens...
      在混合物还没有变硬之前，趁热将它塑成形。
   2. Give the cardboard two or three coats of varnish to harden it.
      在纸板上涂两三层清漆使其变硬。
2. V-ERG （使）（态度、想法）变得更坚定;（使）变得更强硬
   When an attitude or opinion hardens or is hardened, it becomes harsher, stronger, or fixed.
   1. Their action can only serve to harden the attitude of landowners...
      他们的行动只会让土地拥有者的态度变得更坚定。
   2. The bitter split which has developed within Solidarity is likely to harden further into separation.
      团结工会内部已产生的不愉快分歧可能会进一步演变为分裂。
3. VERB （价格、经济）变得更稳定
   When prices and economies harden, they become much more stable than they were.
   1. Property prices are just beginning to harden again.
      房地产价格刚开始重新趋于稳定。
4. V-ERG （使）变得坚强;（使）变得冷酷无情;（使）变得麻木不仁
   When events harden people or when people harden, they become less easily affected emotionally and less sympathetic and gentle than they were before.
   1. Her years of drunken bickering hardened my heart...
      她多年来醉酒寻衅的恶习让我变得麻木。
   2. She was hardened by the rigours of the Siberian steppes...
      西伯利亚大草原的艰苦环境使她变得坚强起来。
   3. All of a sudden my heart hardened against her.
      突然间我对她硬起了心肠。
5. VERB （表情、眼神）变得严肃，变得不快
   If you say that someone's face or eyes harden, you mean that they suddenly look serious or angry.
   1. His smile died and the look in his face hardened.
      他的笑容消失了，脸上的表情严肃了起来。

verb

1. （使）变硬，硬化
   to become or make sth become firm, stiff or solid
   1. The varnish takes a few hours to harden.
      清漆需要几个小时才能干透。
   2. a method for hardening and preserving wood
      硬化和保存木料的方法
2. （使声音、面孔等）更严肃，更严厉
   if your voice, face, etc. hardens , or you harden it, it becomes more serious or severe
   1. Her face hardened into an expression of hatred.
      她的脸沉下来，面带恨意。
   2. He hardened his voice when he saw she wasn't listening.
      看到她没在听他讲话，他声音严厉起来。
3. （使）更坚定，更强硬
   if sb's feelings or attitudes harden or sb/sth hardens them, they become more fixed and determined
   1. Public attitudes to the strike have hardened.
      公众对这次罢工所持的态度已强硬起来。
   2. Their suspicions hardened into certainty.
      他们由怀疑变成肯定。
   3. The incident hardened her resolve to leave the company.
      这件事使她更加坚定了离开公司的决心。
4. 使变得无情；使不被打动
   to make sb less kind or less affected by extreme situations
   1. Joe sounded different, hardened by the war.
      乔让人觉得变了，让战争变得冷酷无情了。
   2. They were hardened criminals (= they showed no regret for their crimes) .
      他们都是死不悔改的罪犯。
   3. In this job you have to harden your heart to pain and suffering.
      做这项工作面对伤痛和病患时你得保持冷静心情。