控件

例句：

1. 1. The control panel on the computer is very easy to use.
   电脑的控制板使用起来非常简便。
2. 2. The engineers are responsible for maintaining the safety of the control system.
   工程师们负责维护控制系统的安全。
3. 3. The new control system has greatly improved the efficiency of the factory.
   新的控制系统大大提高了工厂的效率。