Zirconsulphate
硫锆石
🗣️ 情景例句
which we made clear at the beginning of the negotiation.
关于这一点，我们早在开始谈判时期就讲明了。
What time does the train for Boston leaves?
去波士顿的火车几点开？
My name is Sun Huimin.
我叫孙辉民。