Rashing
煤层底板的软碳质页岩
🗣️ 情景例句
Speaking of promoting the book,
说起促销书的事
Sure. Just help yourself.
可以，自己拿吧。
At the far end of the lake, they came to huge piles of rubble which had been washed up by the water.
在湖的尽头，他们见到一大堆一大堆由湖水冲刷上岸的碎石。