casehardened
'keishɑ:dnd
基本解释
a. 经热处理变硬的, 无感觉的, 麻木不仁的
英文释义
a. Having the surface hardened, as iron tools.
a. Hardened against, or insusceptible to, good
influences; rendered callous by persistence in wrongdoing or resistance
of good influences; -- said of persons.
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