Optional nature
[法] 任择性, 非强制性, 任意性
🧩 词语组成解析
🗣️ 情景例句
That's nothing at all.
不用客气。
I'm the brightest man in my party.
我是我的聚会中最聪明的男人。
This person recognized the words for river and guitar, and so Haley thought that his ancestor must have come from Gambia.
这个人认出了表示“江”和“吉他”的这两个词，于是哈利就认为他的祖先准是来自冈比亚。