Anthracolitization
煤化作用
🗣️ 情景例句
It's almost ten o'clock.
差不多十点了。
I try to keep in touch with current events by reading the newspapers.
我经常读报以尽量了解时事。
But in an old man who has known human joys and sorrows,
可是老年人已经饱尝了人间的甘苦，