deep blueWiktionary 原文英美构词拆解deep词干+blue词干词源链中古英语Middle English约 1150–1500 年depe blew↓ 继承英语Englishdeep blue词源说明From Middle English depe blew, equivalent to deep + blue.释义形容词adjective1An intense, relatively dark blue.2(US, politics) Of a geographic area, state, or district, heavily and consistently voting for the Democratic Party.名词noun