Perithallium
围层
🗣️ 情景例句
Still waters run deep.
冰冻三尺非一日之寒。
I wasn't serious, I meant it as a joke.
我并非有意，我只是开个玩笑而已。
But I couldn't answer the rest.They were too difficult for me.
但我回答不出其作的题。那些题对我来说太难了。