direct-viewing tube

例句：

1. 1. The new TV has a direct-viewing tube that allows you to watch shows without the need for a remote control.
   这款新电视有一个直接观看管，可以让你无需遥控器就观看节目。
2. 2.The director-viewing tube is designed to provide a clearer and more detailed view of the event.
   导演观看管旨在提供更清晰、更详细的事件画面。
3. 3.The director-viewing tube was introduced as an alternative to traditional film projection systems.
   导演观看管作为一种传统电影投影系统的替代方案被引入。