Proving
来自Big Physics
Middle English: from Old French prover, from Latin probare ‘test, approve, demonstrate’, from probus ‘good’.
wiktionary
From Middle English provyng, pryvynge, equivalent to prove + -ing.
From Middle English provyng, prevyng, provynge, prevynge, preovyng, prufunge, preofunge, from Old English *prōfung, equivalent to prove + -ing.
