Optional nature
[法] 任择性, 非强制性, 任意性
🧩 词语组成解析
🗣️ 情景例句
Hello, hello.... Oh, hi, Susan.
喂 喂……啊 嗨 Susan
He is the wise man who is the honest man.
诚实的人就是聪明的人。
The conference was very well organized. Everything began and finished on time.
会议安排的很好。开始和结束都准时。