single-office exchange

例句：

1. 1. The company's single-officeexchange has been a major source of revenuefor years.
   该公司的单一办公室交换系统多年来一直是主要的收入来源。
2. 2. The newsingle-office exchange willgreatly improve the efficiency of thecompany's operations.
   新的单一办公室交换将大大提高公司运营的效率。
3. 3. The single-office exchange system is widely used in manyindustries due to its cost-effectivenessand flexibility.
   由于其成本效益和灵活性，单一办公室交换系统在许多行业中得到了广泛应用。