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reflux (n.)
[reflux 词源字典]
early 15c., "a flowing back (of the sea, etc.)," from Medieval Latin
refluxus
, from Latin
re-
"back, again" (see
re-
) +
fluxus
"a flowing" (see
flux
). Digestive sense is recorded from 1937.
[reflux etymology, reflux origin, 英语词源]