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routine (n.)[routine 词源字典]: 1670s, from French routine "usual course of action, beaten path" (16c.), from route "way, path, course" (see route (n.)) + noun suffix -ine (see -ine (1)). Theatrical or athletic performance sense is from 1926. The adjective is attested from 1817, from the noun. Related: Routinely.[routine etymology, routine origin, 英语词源]