Engrail
vt. 使成锯齿状
🗣️ 情景例句
His family is a nuclear family with three generations living together under one roof.
他的家庭是三代同堂住在同一屋檐下。
I'm fine, and you?
我还好，你呢？
But which language is the most widely spoken in the world?
但是世界上哪种语言运用最广泛？