Rashing
煤层底板的软碳质页岩
🗣️ 情景例句
Seven letters ... two words ...
七个字母……两个字……
If the old dog barks, he gives counsel.
如果老狗叫，他是给忠告。
Yes. Wash your hands with soap at the end of your experiment.
可以。在实验结束时要用肥皂洗手。