Simpsonite
[矿]钽铝石
🗣️ 情景例句
We need a stable political environment in which to develop our economy.
我们需要一个稳定政治环境来发展经济。
Old wood is best to burn,old book to read.
老柴好烧，老书宜读。
Would you tell me your phone number?
你能告诉我你的电话号码吗？