built-in channel

例句：

1. 1. This software has a built-in channel for easy communication between users.
   这款软件有一个内置通道，方便用户之间的通信。
2. 2.The new product comes with a built-in channel for remote control.
   新产品带有一个内置的远程控制通道。
3. 3. The company has implemented a built-in channel to improve customer service efficiency.
   该公司已经实施了一个内置的通道来提高客户服务效率。