- harden
 - ['hɑ:dən]
 - vi. 变硬,变坚固;变坚强;变冷酷
vt. 使…变硬;使…坚强;使…冷酷;使…麻木不仁 
反义词
           - v. soften
 
参考例子
           - 1.With the temprature cool, magma would be hardened into rock.
 - 温度越来越低,岩浆也就变硬,最后成了岩石。
 
- 2.Why shall harden steel be annealed?
 - '淬火'。''钢为什么要退火呢?
 
- 3.A battery of simulation tests helps harden combat soldiers into the Empire's elite armor assault crews.
 - 一系列的模拟训练让战斗兵更加顽强,以进入帝国的精英装甲突击部队。
 
英文解释
           - v.
 - 1.become hard or harder
 - 2.make hard or harder
 - 3.harden by reheating and cooling in oil
 - 4.make fit
 - 5.cause to accept or become hardened to; habituate
 
网络释义
               - harden
 - 硬化; 使变硬; 加硬; 使硬化;
 
- harden harden
 - 使变硬;
 
- Mark Harden
 - 首席驯兽师马克·哈登;
 
- harden v
 - 使变硬 变得坚强;
 
- harden against
 - 使变得冷酷无情; 使麻木不仁;