动词

1.[I,T]（使）变硬，（使）坚固，（使）硬化

2.不及物动词：变得更坚定，变得冷酷无情

3.及物动词：使变得坚强，使更有忍耐力

词形变化

时态hardened，hardened，hardening，hardens

英语解释

become hard or harder

cause to accept or become hardened to; habituate

harden by reheating and cooling in oil

make hard or harder

make fit