social exchange, especially of opinions, attitudes, etc.特に意見や態度などの社交的な交換交流
transactions (sales and purchases) having the objective of supplying commodities (goods and services)商品(品物とサービス)の供給という目的を持つ取引(販売と購買)通商
the United States federal department that promotes and administers domestic and foreign trade (including management of the census and the patent office); created in 1913米国の連邦省で、(国勢調査局や特許局の運営なども含めて)国内外の商取引を促進し、管理する商務省