问答题

Man’ s chief offence against nature has been to damage the earth’ s natural covering of vegetation without replacing it with a system of farming that is to maintain the fertility of the soil. Man, the farmer, has penetrated new lands in many directions, and the forests and grasslands have been vulnerable to his various activities.

【参考答案】

人类对自然的主要忤逆是破坏了地球的自然植被，却不用农业生态系统来替换以保持其肥沃的土壤。人类，确切地说是农民，在很多生态......

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