Coal degradation
[建] 煤之剥蚀
🧩 词语组成解析
coal
[kol]
n. 煤;煤块;煤堆;木炭;
vi. 上煤;加煤;
vt. 给…加煤;把…烧成炭;
🗣️ 情景例句
He'll do anything to avoid getting down to math lessons,
他老是设法想逃避数学，
I often go to school in the morning.
我常常在早上去学校。
I left at 6:00 so that I could catch the train.
我六点钟出门，以便赶上火车。