Bialternant
[数]双交替式
🗣️ 情景例句
Yes, it is possible that we forgot to buy cinnamon.
是的， 我们可能忘了买肉桂。
Bye!
再见啦！
Before you leave the lab, make sure the electricity is turned off and the windows are shut.
你们离开实验室前，务必要关上电源，关好窗户。