1. The farmer overplowed his fields, leading to soil erosion and reduced fertility.
这个农民过度犁地，导致土壤侵蚀和肥力下降。
2. Overplowing can have negative consequences for the environment, such as loss of topsoil and disruption of natural ecosystems.
过度犁地可能对环境产生负面影响，如土壤流失和自然生态系统的破坏。