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At present, many computer networks are suffering from a serious security threat.
目前许多计算机网络正面临着严重的安全威胁。
youdao
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Computer virus is a great threat to the security of information system.
计算机病毒是信息系统安全的大敌之一。
youdao
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Computer virus is a great threat to the security of information system.
计算机病毒是信息系统安全的大敌之一。
youdao