At present, computer virus enters all fields of information society, and brings enormous damage and hidden threats for computers all over the world.
目前计算机病毒可以渗透到信息社会各个领域，给全球计算机系统带来了巨大破坏和潜在威胁。
Globalization hasn't made everyone a winner, and in the fields of finance, information, health and others, there exist hidden security threats.
全球化并未普惠全球，金融、信息、卫生等领域的安全隐患无处不在。
Hidden failures in protection system are great threats to the operation of power grids, while there are almost no on-line diagnostic methods for hidden failures so far.
继电保护系统的隐藏故障对电网的运行威胁很大，而隐藏故障的在线诊断十分困难。
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