Danks
煤页岩, 黑色碳质页岩
🗣️ 情景例句
you've been writing for the school paper.
你为校刊写文章。
I'm going to show him how to speak Chinese.
我正要指点他如何讲中国话。
Jim, could you help us, please?
吉姆，你能帮我们吗？