而且还增进友谊
It also promotes friendship
以上为机器翻译结果，长、整句建议使用 人工翻译 。
研究报告还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.
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