Fixed
来自Big Physics
late Middle English: partly from Old French fix ‘fixed’, partly from medieval Latin fixare ‘to fix’, both from Latin fixus, past participle of figere ‘fix, fasten’. The noun dates from the early 19th century.
etymonline
fixed (adj.)
late 14c., of stars, "unchangeable in position," past-participle adjective from fix (v.). Related: fixedly (1590s). Fixed-income (n.) is from 1767.
