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meltdown (n.)
[meltdown 词源字典]
by 1937 in the ice-cream industry; by 1956 in reference to a nuclear reactor, from verbal phrase, from
melt
(v.) +
down
(adv.). Metaphoric extension since 1979.
[meltdown etymology, meltdown origin, 英语词源]
[meltdown 词源字典]