Nowadays, information systems are mostly threatened by information stealing and destroying attacks launched by such malware as virus, worm, Troy horse and spy-ware.
显式授权机制具备很好的安全性质，能有效地防御信息窃取和破坏攻击。
When the advertisement language communicates the information about ware and service, it can make a rhetoric mirage stealthily.
广告语在传递商品或服务信息的同时，也可能在悄悄地制造修辞幻象。
Integral ware is a software system, by which teachers and students can use multimedia information source freely in the need of instruction.
积件是由教师和学生根据教学需要自己组合运用多媒体信息资源的教学软件系统。
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