Thallide
铊化物
🗣️ 情景例句
Don't laugh. In the beginner's class,they give you a chance to rest between exercises.
别笑。在初级课程中你有机会休息。
We have some reports to show you for background information.
我们还有一些报告向你介绍背景资料。
That's not surprising.
那不奇怪。