Tocnnalite
碘银汞矿
🗣️ 情景例句
Are you here on business or for pleasure?
你来这儿是出差还是游玩？
The more we study, the more we discover our ignorance.
学得越多，就越发觉自己无知。
Is there much of a price difference.
价钱有很大的差别吗？