tradesWiktionary 原文英美/treɪdz/n.贸易，商业，交易，生意，职业，顾客，信风vi.进行交易，做买卖，经商，对换，购物vt.用...进行交换trade 的变形 · 中文释义来自 ECDICT构词拆解tradetrade词干s-s后缀-sUsed to form regular plurals of nouns. · Used to form many pluralia tantum (nouns that are almost or entirely without singular forms).词源说明From trade + -s.释义名词noun1plural of trade名词noun1Ellipsis of building and manufacturing trades (“the vocations of skilled blue-collar workers; the workforce in these vocations”).2Ellipsis of trade publications (“publications within an industry or group of related industries, reporting industry-related news