Dismount
来自Big Physics
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mid 16th century: from dis- + mount1, probably on the pattern of Old French desmonter, medieval Latin dismontare .
wiktionary
dis- + mount, probably a calque of Old French desmonter.
etymonline
dismount (v.)
1540s, "to remove or throw down cannons from their mountings," from dis- + mount (v.). Meaning "get off from a horse or other ridden animal" is from 1580s; transitive sense of "throw or bring down from a horse" is from 1610s. Meaning "remove (a gem, picture, etc.) from a frame, setting, or other mount" is by 1879. Related: Dismounted; dismounting.
