Mitchellite
镁铬铁矿
🗣️ 情景例句
But first in the school-rooms.
但首先是在教室 。
Put not your hand between the bark and the tree.
少管闲事。
Good idea! It's much better than having classes! Can I go, too?
好主意！这比上课好得多！我也可以去吗？