Pnictide
磷族元素化物
🗣️ 情景例句
I could tell something was up by the look on their faces.
我一看他们的脸色就知道有事。
Pleasant dreams!
愿您睡得香甜！
Choose any subject. Something about England, for example.
你可以选任何题日。例如，你可以谈谈英国的情况。