Mesonorm
中带标准矿物
🗣️ 情景例句
The mailman just dropped some mail in our box, Grandpa.
邮差刚刚塞进一些信件在我们的信箱， 爷爷。
John has his own family now.
约翰现在有自己的家了。
Most business letters around the world are written in English.
世界上大多数商务信函都是用英语写的。