1. 市场   expenses   market   export   purchase   Hint Half-n-half Clue   2. 商品   sales   investment   merchandise   import   Half-n-half Clue   3. 价格   price   supplies   purchase   production   Half-n-half Clue   4. 生产   supplies   export   production   income   Half-n-half Clue   5. 赢利   import   production   salary   profits   Half-n-half Clue   6. 购买   wage   import   loss   purchase   Half-n-half Clue   7. 费用   export   wage   expenses   purchase   Half-n-half Clue