"Alternate" 是英语中的动词，意思是每隔一段时间地轮流替换或交替。

来源：该词源自拉丁语 "alternare"，意思是 "交替"。

英文例句：

The power supply to the city will alternate every hour to prevent overloads.
(城市的电力供应将每小时交替，以防止过载。)
We will alternate between outdoor and indoor activities during the camping trip.
(我们将在野营行程中在户外和室内活动之间交替。)
The restaurant offers an alternate menu for customers with food allergies.
(餐厅为有食物过敏的顾客提供交替菜单。)

中文翻译：交替，轮流替换，交替使用。