根据生态系统的物质循环、能量流动和信息传递三大基本功能，分析了网络学习生态系统的功能。
According to an ecosystem'sessential function of substance circulation, energy exchanges and information transfer, the paper analyzes the function of E-Learning ecosystem.
本文介绍了物质与能量流动分析的主要观点、分析方法及其在经济领域中的应用情况。
This article introduced the main points, analysis methods of circulating analysis of matter and energy and its application in economy.
分析家说，双职工父母的出现，子女数目减少并被“宠坏”。人员流动性增加。物质主义以及家庭和社区权威的丧失迫使违法行为有增无减。
Analysts say that the advent of two working parents, fewer and "Spoiled" children, increased mobility. Materialism and the loss of family and community authority have lead to higher lawlessness.
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