1. 销售税   product   to buy   sales tax   business card   Hint Half-n-half Clue   2. 在事务   business trip   on business   price list   to buy   Half-n-half Clue   3. 营业时间   to charge   business trip   to buy   business hours   Half-n-half Clue   4. 价格表   to charge   income tax   price list   on business   Half-n-half Clue   5. 卖   to sell   to pay   profit margin   business   Half-n-half Clue   6. 支付   business card   to pay   to charge   to buy   Half-n-half Clue   7. 利润率   business hours   profit margin   tax   factory   Half-n-half Clue