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hothouse (n.)
[hothouse 词源字典]
mid-15c., "bath house," from
hot
+
house
(n.). In 17c. a euphemism for "brothel" (similar to
massage parlor
); the meaning "glass-roofed structure for raising plants" is from 1749. Figurative use by 1802.
[hothouse etymology, hothouse origin, 英语词源]