Optional nature
[法] 任择性, 非强制性, 任意性
🧩 词语组成解析
🗣️ 情景例句
Well, have a nice trip and best wishes to your wife.
祝你一路顺风，并替我向你太太问好。
Why isn't this ticket any good here?
为什么这里不可以使用月票？
So I don't think she's left the college. And her papers and books are all over the desk.
所以我认为她还在学校。而且她的作业和课本都放在桌子上。