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kryptonite (n.)
[kryptonite 词源字典]
fictional substance in the "Superman" series, where it weakens the otherwise invulnerable hero, 1943; perhaps from elements of
krypton
(which is a gas) +
meteorite
.
[kryptonite etymology, kryptonite origin, 英语词源]
[kryptonite 词源字典]