The study also cites efforts in some cities to reduce emissions as part of a larger strategy to ease traffic and other problems.

这项研究还介绍了，作为缓解交通及其它问题的上层策略的一部分，一些城市如何努力去减少排放。

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However, the problems such as low data quality, sensitive data leakage, external malicious theft and so on, it is urgent to study the effective information security strategy.

然而数据质量低下、敏感数据外泄、外部恶意窃取等问题随之而来，研究行之有效的信息安全策略已刻不容缓。

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As we all know, a good study strategy can help us get twice the result with half the effort.

经过这样系统的有目的的练习，相信定会取得事半功倍的效果。

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Since its launch in 2010, Instagram has won more than 50 million users, and nearly half of the world's top brands use it as part of their marketing strategy, according to a recent study.

BBC: Facebook's Instagram bid gets go-ahead from the OFT