Alternates
v. 交替( alternate的第三人称单数 ); （使）交替, （使）轮换
🗣️ 情景例句
What channel?
哪个频道？
When the weather is hot, we turn on the air conditioner.
天热的时候就开空调。
In the tree there is a bird.
树上有一只鸟。