一些新出现和有流行倾向的疾病直接威胁到国家和国际安全。
Some emerging and epidemic-prone diseases are direct threats to national and international security.
新科技使得网上投票和其他电子投票方式在美国和其他一些地区流行起来，尽管人们对这一系统的安全顾虑日益继增。
New technologies allowing voters to cast ballots via the Internet or other electronic means are catching on in the United States and elsewhere, even as fears mount about security of the systems.
这套计算模型中引入了一些高层次的类型系统和安全机制，使它的表达能力和安全性超越了流行的基于面向对象的计算模型。
There are high level type systems and soundness in the new computing model, making it extremely expressive and robust, which is seldom possible in prevailing object-oriented programming.
应用推荐