mail piece造句

• Business advertising . on the other hand, tends to be concentrated in specialized business publications or professional journals, in direct-mail pieces mailed to business establishments, or in trade shows held for specific areas of business
  而相反的，产业广告则趋向于集中在特定产业出版物、专业期刊、为建立业务关系的直接邮递品及特定产业领域的贸易展览会上。