Cycloperoxene
环过氧烯
🗣️ 情景例句
If no one comes to claim Gemma,
如果没有人来认领Gemma，
The mailbox is over there.
邮筒就在那儿。
Hmm! I think I can mend it. But I want a knife. Do you have a knife?
我想我可以，但需要一个小刀，你有吗？