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 |