To solve this problem, the two questions must be answered: what is the constraint that the nature resources and ecology environment put on the economic activity of human being?
要解决这个问题,两个问题必须得到回答。 自然资源和生态环境到底给人类经济活动施加什么样的约束?。
youdao
应用推荐
模块上移
模块下移
不移动