Ultramafite
超镁铁岩; 超铁镁岩
🗣️ 情景例句
I think you are getting off the subject. Could we get back to the main point, please?
我觉得你跑题了。 我们能不能回到主题上来？
The master always exacts quality work from his students.
老师常常要求学生们认真踏实的完成功课。
But when table, penholder and paper are all moving, how is it possible to write legibly?
可是，当桌子、夹笔装置、纸都在移动时，怎么能书写得清楚呢？