Anthracitization
无烟煤化作用
🗣️ 情景例句
Mrs. Montefiore told me that
Montefiore太太告诉我
Little strokes fell great oaks.
水滴石穿。
there is no evidence that the total amount of activity is any less.
但没有迹象表明，其活动总量有任何减少。