erosion caused by human activities的意思|示意
美 / /
英 / /
人类活动造成的侵蚀
erosion caused by human activities的网络常见释义
人为侵蚀 ... 自然侵蚀 natural erosion 人为侵蚀 erosion caused by human activities 土壤侵蚀类型 type of soil erosion ...