释义
adj.
having become or been made hard or harder
硬化的
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hardened steel .淬火钢。
strengthened or made secure against attack, especially by nuclear weapons
（尤指为防核武器攻击而）加固的
-
the silos are hardened against air attack .发射井被加固以防空袭。
[attrib.]very experienced in a particular job or activity and therefore not easily upset by its more unpleasant aspects
经验丰富的；老练的
-
hardened police officers 老练的警官
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[in combination]
a battle-hardened veteran .久经战火考验的老兵。
utterly fixed in a habit or way of life seen as bad
积重难返的；顽固不化的
-
hardened criminals 顽固不化的罪犯
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a hardened liar .积习难改的说谎者。
