Eckermannite
[矿]氟镁钠闪石
🗣️ 情景例句
You should write about your education first.
你应该在开头就谈到你的教育情况。
Compared to the previous model, our new model is less expensive and easier to use.
与旧型机比较我们的新型价格便宜且更容易操作。
Most countries use these satellites to send and receive messages.
大多数国家利用这些卫星发送和接收消息。