Anthraconite
黑方解石, 沥青灰岩
🗣️ 情景例句
What do you think? Does it look promising?
你怎么想？ 希望大吗？
The more we study, the more we discover our ignorance.
学得越多，就越发觉自己无知。
I hope we can see each other again some time.
希望还能有相见的机会。