Danks
煤页岩, 黑色碳质页岩
🗣️ 情景例句
How about you, Richard?
你呢， Richard？
Our product is competitive in the international market.
我们的产品在国际市场上具有竞争力。
People think we look the same, but I can see that we're different.
人们认为我们长得一模一样，但是我能看出我们的差别。