Nicotin
n. 烟碱
🗣️ 情景例句
You should perform what you promised to do.
你应该履行诺言。
No. Can't you see that rocket is almost falling down.
不。你不知道火箭快要倒下来了吗？
As a matter of fact, it is the other way around.
事实上，情况正好相反。