Fluoreneamine
芴胺
🗣️ 情景例句
That's it. There.
很好。啊。
We can't fly our kites any more because the wind has stopped.
由于风静止，所以已经没法放风筝了。
but on the second, I applied myself assiduously to the task.
不过，新年第二天，我全力以赴地照着去做了。