Unique identification
[计] 唯一标识
🧩 词语组成解析
🗣️ 情景例句
We're very lucky, the three of us ...
我们非常幸运， 我们三个……
It's a deal!
一言为定！
'I left the money in my room,' I said, 'and it's not there now.
“我把钱放在房间里，”我说，“可现在没有了。