Chewing
来自Big Physics
Old English cēowan, of West Germanic origin; related to Dutch kauwen and German kauen .
wiktionary
From Middle English chewyng, chewand, from Old English *ċēowende, from Proto-Germanic *kewwandz, present participle of Proto-Germanic *kewwaną(“to chew”), equivalent to chew + -ing.
From Middle English chewyng, chewynge, from Old English ċīwung, ċȳwung, ċēowung(“chewing”), equivalent to chew + -ing.