Sedenion
十六元数
🗣️ 情景例句
You really must have your wits about your when dealing with such people.
跟这类人打交道，你必须格外警觉。
It's hard to say.
难说。
I'm sorry. I didn't know you wanted it. What a shame!
抱歉。我不知道你想要它。真可惜！