🧩 词语组成解析
[医] 钴(27号元素)
n. 指示物
🗣️ 情景例句
Am I older than you? You look so young.
我比你老吗？你看起来非常年轻？
I'd like to change this ticket to the first class.
我想把这张票换成头等车。
Who's that?
那个人是谁？