Spiroheptane
螺[3.3.]庚烷
🗣️ 情景例句
I will. See you later.
我会告诉她的。再见！
If I had known that, I could have helped you.
假如我早知道，我就能帮你了。
Here you are But you mustn't come home after a quarter past eleven.Do you hear?
拿去。但你不能超过11点1刻回家。听见了吗？