Because of this increased concentration, regrowth of plants is minimal, leading to increased erosion, which leads to a decrease in the fertile topsoil, leading to even less regrowth.
由于浓度的增加，植物的再生长很少，导致侵蚀增加，使得肥沃的表层土壤减少，再生长更少。
2
When the regrowth was removed, they vanished again.
再度摘除，则倾向再度消失。
3
The regrowth and re-hardening makes the broken concrete strong again.