clastic wedge

例句：

1. 1.The soil is clastic and hard to cultivate.
   土壤是多孔的，难以耕种。
2. 2. The rocks are clastic and can be easily broken.
   岩石是多孔的，很容易破碎。
3. 3. The soil is clastic and has a high water retention capacity.
   土壤是多孔的，保水能力强。