hardens
['hɑ:dn]
[ hardens ]
v. (使)变硬, (使)坚强
例句与用法：
Hot steel is quenched to harden it.
烧热的钢淬火使它坚硬。
His face hardened at the word.
他听到这话，脸沉了下来。
Life in the camp had hardened him considerably.
军营生活使他变得坚强多了。
词形变化：
动词过去式: hardened |
动词过去分词: hardened |
动词现在分词: hardening |
动词第三人称单数: hardens |
