Ditetragon
双四边形
🗣️ 情景例句
I like to study in the library because it's so quiet.
我喜欢在图书馆学习因为那儿很安静。
I'm sorry. Am I keeping you awake?
对不起。我吵得你睡不着了吗？
Hello, Wei Hua! Where are you going?
你好，魏华！上哪儿去呀？