Anthracolite
[化] 黑方解石; 里沥青灰岩
🗣️ 情景例句
She's an easy-going teacher.
她是位随和的老师。
It is lost labour to sow where there is no soil.
没有土壤，播种也是徒劳。
I'm afraid I don't understand.
恐怕我还不明白您的意思。