erosional coal basin

例句：

1. 1.The erosional features of the landscape are evident in the rocky terrain.
   景观中的侵蚀特征在岩石地形中显而易见。
2. 2.The erosional process has left behind many fossils from long-gone eras.
   侵蚀过程留下了许多来自很久以前时代的化石。
3. 3. The erosional forces have shaped the landscape into its current form.
   侵蚀力量已经将地貌塑造成现在的样子。