Believing
来自Big Physics
late Old English belȳfan, belēfan, alteration of gelēfan, of Germanic origin; related to Dutch geloven and German glauben, also to lief.
wiktionary
From Middle English bilevyng, belevand, bileveand, belefand, from Old English *belēfende, ġelīfende, ġelȳfende. Equivalent to believe + -ing.
From Middle English bilevinge, belewynge, equivalent to believe + -ing.