Lithogeny
岩石成因学
🗣️ 情景例句
Rotten weather, isn't it?
天气糟透了， 不是吗？
Self-trust is the essence of heroism.
自信为英雄品质之本。
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？