Derivator
[计] 微分器
🗣️ 情景例句
Don't forget to write.
别忘了给我写信。
Thank you.
谢谢。
He started to complain about this wicked world but was interrupted by a knock at the door.
他开始抱怨起这个邪恶的世道来，却被一阵敲门声打断了。