flat-mouthedWiktionary 原文英美构词拆解flat词干+mouthed词干词源链中古英语Middle English约 1150–1500 年flatt-mowthede↓ 继承英语Englishflat-mouthed词源说明From Middle English flatt-mowthede, equivalent to flat + mouthed.释义形容词adjective1Having a broad mouth