buying and selling

• 购销

buying and selling的用法和样例：

例句

1. Establishing ephedrine purchase and marketing verification rules.
   建立麻黄素购销核查制度。
2. Reform to subordinate the buying and selling of cotton to market forces was also deepened and some breakthroughs were made.
   棉花购销市场化改革也不断深化，取得了突破性进展。