Spirocyclane
螺环烷(专指：螺戊烷)
🗣️ 情景例句
They shared the first harvest with the Indians
他们与印第安人分享首次收成
Have you got that?
你明白我的意思吗？
It's the library's. Please be more careful from now on!
“是图书馆的书。从现在起请你倍加小心！”