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.
例如我们最流行的一些机型阀故障安全版本是至关重要的应用中最大限度地保护那里的工人需要的各种机器。
For example fail-safe versions of some of our most popular valve models are critical to machines in a variety of applications where workers need maximum protection.
吸食电子烟越来越流行，引发了关于其安全性以及帮助人们戒烟的能力的辩论，还有人担忧吸食电子烟会导致一些人再度吸烟。
The growing popularity of e-cigarette has prompted debate about their safety and potential to help people quit tobacco smoking and the risk they may encourage some people to take it up.
吸食电子烟越来越流行，引发了关于其安全性以及帮助人们戒烟的能力的辩论，还有人担忧吸食电子烟会导致一些人再度吸烟。
The growing popularity of e-cigarette has prompted debate about their safety and potential to help people quit tobacco smoking and the risk they may encourage some people to take it up.
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