Bermanite
板磷镁锰矿
🗣️ 情景例句
And now for ... something old,
现在， 接着是 一些旧的，
I'm going to show him how to write.
我正要指点他如何写字。
It was necessary, therefore, to invent instruments that neither slumbered nor slept.
因此，有必要发明一种仪器，既不打盹儿，也不睡觉。