研究报告还发现，社交网络本身对于孩子并没有特别大的风险，而且大体上是有益的，因为社交网络能够增进友谊。
The report also found that social networking sites, in themselves, are not a special source of risk to children, and are generally beneficial as they support existing friendships.
本文的工作是神经网络方法在建立电波大气传输效应预报模型应用中的有益尝试。
It is a useful try to construct the radio wave propagation predication model by the neural network.
图书馆的非数字化信息资源是网络信息的有益补充，用户信息教育成为图书馆的重要任务。
The non-digital information resources of the library are beneficial supplements for the network information, and the clients' information education is the important task of the library.
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