business letters (commercial letters )commercial letters商业: commerce; trade; business尺牍: a model of epistolary art co ...英文商业尺牍: english commercial correspondence尺牍: 1.(书信写法示范) a model of epistolary art2.(旧指书信) correspondence (of an eminent writer)商业对商业: business to business下载手机词典可随时随地查词查翻译