éclaircissement
/eɪˌkleəsiːsˈmɒŋ/noun
- archaic or poetic/literary an enlightening explanation of something, typically someone's conduct, that has been hitherto inexplicable〈古或诗/文〉（对迄今无法解释的事物, 尤指对某人行为的）阐明, 解释; 明朗化。
词源
French, from éclaircir 'clear up', from é (expressing a change of state) + clair （see CLEAR）.