face-harden'feis,hɑ:dәn英式朗读美式朗读基本解释vt. 使...的表面硬化英文释义v. harden steel by adding carbon词形变化现在分词face-hardening过去式face-hardened第三人称单数face-hardens过去分词face-hardened上一个单词:face-down feed下一个单词:face-hardened