Bastnaesite
氟碳鈰礦
??? 情景例句
Welcome to China. May I have a look at your customs declaration?
歡迎來中國(guó)。我可以看一下您的入境申請(qǐng)報(bào)表嗎？
Why did you go there?
你為什么去那兒？
I appreciate your help.
我感謝你的幫助。