Alternations
(alternation 的复数) n. 交互, 轮流, 间隔\\n[计] 交替工作
🗣️ 情景例句
Besides, we are not going to be here Saturday.
另外， 我们星期六将不在这儿了。
Why are you standing behind the door?
你为什么站在门后？
I was only five when my father had taken me abroad, and that we eighteen years ago.
我5岁那年，父亲就带我出了国，那是18年前的事了。