Isolation
来自Big Physics
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mid 19th century: from isolate, partly on the pattern of French isolation .
wiktionary
[1800] From French isolation, from isolé, placed on an island (thus away from other people). Equivalent to isolate + -ion.
etymonline
isolation (n.)
1800, noun of action from isolate (v.) or else from French isolation, noun of action from isoler (see isolated).
