But there is evidence to suggest that when parents provide more information and better modeling early on, their children's risk of substance abuse goes down.
就这一点，研究是有限的。但是有证据表明，如果家长越早给孩子提供模范榜样，给他们提供更多好的信息，孩子们滥用药物的危险就可能降低。
According to an ecosystem'sessential function of substance circulation, energy exchanges and information transfer, the paper analyzes the function of E-Learning ecosystem.
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。
Besides substance and energy, information is one of the three elements of which the objective world is composed, and it can be found all over the nature and the human's society.
信息是除物质与能量之外构成客观世界的三要素之一，它遍布于自然界和人类社会之中。
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