Anthraconite
黑方解石, 沥青灰岩
🗣️ 情景例句
I'm very sorry.
非常抱歉。
I hope you trust me
我希望你信任我。
and at the most critical juncture we took turns in watching that point.
在最紧急的时刻，我们轮流监视那段河流的险情。