Petrologen
油母岩质
🗣️ 情景例句
Prices are always negotiable.
价钱总是可以商量的。
When did you know the answer?
你什么时候知道答案？
I'll get another one now, said her mother.Don't worry.
“我这就再去拿一支，”她妈妈说，“别担心。”