Antiderivative
[机] 反式衍生物
🗣️ 情景例句
Well, there are Dragon Boat Festival, Mid-autumn Festival, Chung Yeung Festival and so on.
嗯，还有端午节、中秋节、重阳节等等。
Comets to appear
彗星出现了
What about?
找他有什么事吗？