switch tree

例句：

1. 1.The switch tree is a device that allows you to quickly change between two different settings on your computer.
   开关树是一种设备，可以让你在计算机上快速地切换两种不同的设置。
2. 2. The switch tree was designed to improve the efficiency of the power grid by allowing for more flexible power allocation.
   开关树被设计用来提高电网的效率，通过允许更灵活的电力分配。
3. 3.The switch tree is often used in emergency situations where quick access to multiple settings is necessary.
   开关树通常用于紧急情况，需要快速访问多个设置。