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The case-hardened gears in the old mill still meshed smoothly after decades of use.
See correct answer
The case-hardened gears in the old mill still meshed smoothly after decades of use.
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Related words
case-hardened
Adjective
alt-of
alternative
Japanese Meaning
「case hardened」の別綴りとして使われる / 経験を積むことで心や態度が硬化した、すなわち経験により堅くなった
English - English
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