Pentamethylene
n. [化]环戊烷
🗣️ 情景例句
by having us all come together.
使我们聚在一起。
I am on top of the world.
我高兴到了极点。
I smoked with concentration and pleasure as I was sure that this would be my last cigarette.
我聚精会神而又愉快地吸着这枝烟。因为我确信这是我最后一枝烟了。