extension apparatus

例句：

1. 1. The company's product line has been extended to include new models.
   公司的产品线已经扩展到包括新的型号。
2. 2.The team is extending their reach by reaching out to new customers.
   团队正在通过接触新客户来扩大他们的业务范围。
3. 3. The scientist extended the theory to explain more phenomena.
   科学家将理论扩展到解释更多的现象。