Acyclicity
[計] 非周期性, 非循環性, 無環性, 無圈性
??? 情景例句
OK, please. I'll order something else at first.
好的，來一份。我先點別的東西。
I'm afraid I won't be able to come.
我恐怕不能來。
Not at all, smiled Lucy. You're welcome!
“沒關系，”露茜笑著說，“不用謝！”