短语词组用作名词 (n.)动词+～trade in -ties 做物资交易形容词+～marketable commodity 可销售的商品profitable commodity 赚钱的商品daily 〔household〕 -ties 日用品〔家庭用品〕介词+～the prices of the -ties 物价～+介词-ties for export 出口商品短语 返回 commodities