The advantage of this architecture is that different security policies can be supported flexibly . as far as a given security policy , the multiplex policy arguments can be configured without recompiling the kernel or modifying the format of the file system 这种结构使得操作系统能够灵活地支持不同的安全策略，而且对于一个给定的安全策略，系统能够配置成支持不同的安全策略配置参数，而不需要重新编译内核或修改文件系统格式。
In securities trading , investors obtain low - risk and high - return investment profit through professional broker , reaching the goal of capital appreciation throught value stream . information stream decreases the portion of manual brokerage and gives securities brokerage brand new meaning . securities brokerage plays more and more unreplaceable role in the market 信息流则赋予证券经纪以全新的涵义，网络、多媒体以及通讯技术的革命，从根本上改变了证券市场的信息传递方式，证券经纪的中介形式和信息服务、投资顾问服务无论从容量、质量、速度上都产生根本性的飞跃。
The concepts of diversification is familiar to all students of finance : basically , as long as the returns on different investments are not perfectly positively correlated , by exploiting the benefits of size fis diversify away significant amounts of portfolio risk ? especially the risk specific to the individual firm issuing any given security 多样化这个概念对所有金融系的学生来说并不陌生：基本上来说，只要通过利用多样化转化相当部分的有价证券风险的所得收益在不同投资上的回馈并不是非常良性的关联在一起? ?特别是针对个体公司所发行的债券的风险。
