Upgrade

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wiktionary

ref 

up- +‎  grade


etymonline

ref

upgrade (n.)

also up-grade, 1847, "upward slope," from up (adj.) + grade (n.). The meaning "upgraded version" is recorded from 1980.




upgrade (v.)

"increase to a higher grade or rank," 1904 (transitive); 1950 (intransitive), from up (adv.) + grade (v.). Related: Upgraded; upgrading.

取自“https://www.bigphysics.org/index.php?title=Upgrade&oldid=24469”