他们选择了历史上两次大流感作为流感模型，其一是1918年著名的西班牙大流感，死亡人数达五千万至一亿，其二是1957年的流感，杀伤力较前者虽不大，但同样不堪回首。
As model epidemics they chose those of 1918 (the famous “Spanish” flu that is reckoned to have killed 50m-100m) and 1957 (less lethal, but still pretty nasty).
他们先从两个简单的量入手对一个最优结论做出定义，其一是未传染的数量，其二是未死亡的数量。
As definitions of a good outcome they started with two simple measures: the number of infections averted, and the number of deaths averted.
其一是关于评估，其二是关于估价。
有两个因素可能会使金里奇在明年据认为会有很多候选人参加的共和党党内初选中脱颖而出。其一是金里奇深受很多共和党人的欢迎，其二是他的知名度很高。
Gingrich is popular with many Republicans and he has high name recognition - two factors that could help him in what is expected to be a crowded primary field next year.
在墙上挂了三幅肖像，其一是牛顿爵士，其二是法拉第，第三幅就是JamesClerk Maxwell。
He had three portraits on his wall.One was Sir Isaac Newton, another Michael Faraday.The third was James Clerk Maxwell.
有两种方法可以提高产品的装配效率，其一是高效的装配设备，其二是设计具有很好可装配性的产品，第二种方法意义更大。
There are two ways to improve the efficiency of assembly, one is to construct perfect assembly facilities, the other is to design products easily to be assembled.
其一是注重良知，其二是心怀善意。 。
One eis attention to conscience; the other is a spirit of good will.
上述系统的开销主要来自两方面：其一是每个检查点的比较和保存开销，其二是因故障而引起的卷回。
The overhead of such systems comes from two aspects: comparing and saving operations at each checkpoint, and the rollbacks caused by faults.
最主要的两个经济问题激起了民愤：其一是物价上涨，尤其是食品的价格； 其二是能源不足，导致用于购买进口燃料的资金紧缺。
Two economic issues above all are fuelling public anger: price rises, especially for food, and power cuts, a consequence of a shortage of money to pay for imported fuel.
不可否认…有其优势的地方。其一是…其二是…
Admittedly, … has its advantages. One of them is that…, secondly…
后来，两大因素致使美国置身于世界事务之中。其一是它迅猛膨胀的国力，其二是以欧洲为中心的国际体系的渐趋崩溃。
Then two factors projected America into world affairs: its rapidly expanding power, and the gradual collapse of the international system centered on Europe.
对于阅读，我得益于两个方法：其一是每套真题后立即记录笔记，其二是广泛地阅读英国《经济学家》杂志中的商务文章。
Second was how to improve my reading ability. For this, two methods were used: taking notes each time I finished a simulation paper and reading the British business magazine Economist.
季羡林先生的义理之学集中在两个方面，其一是文化多元观，其二是文化交流论。
Professor Ji Xian-lin's argumentation mainly focuses on two aspects, namely the pluralistic concept of culture and the theory of cultural communication.
系统内核主要具有两个功能：其一是管理硬件资源，其二是屏蔽具体硬件差异并为应用程序提供虚拟机。
The system kernel has two main functions: the one is to manage the hardware resource, and the other is to hide the difference of different hardware and provide virtual machine for applications.
自适应动态滑动模控制的作用有两个：其一是在神经网络控制失灵的情形下提供控制系统的全局稳定性；其二是改善系统的跟随性能。
The dynamic sliding mode control serves two purposes, one is to provide the global stability of the closed loop system, and the other is to improve the tracking performance.
对底部两层框架砌体结构房屋的抗震设计其一是要合理选择结构布置形式，其二是要加强抗震构造措施。
The key is selecting structure patterns and strengthening anti seismic techniques for double frame of bottom building structure.
唐代岭南谪宦对该地区教育影响深远，其一是创岭南官学教育正规化和制度化风气之先，其二是岭南游学之风日兴。
Therefore, the banished officials had profound influence upon education of Lingnan. On one hand, they set up the institutional official education system. On the other, they led the fashion of study.
梁代隐士影响社会教化的渠道主要有两种，其一是自身德行与学识，其二是帝王的大力推崇。
There are two channels of impacting social moralization by the hermits in Liang Dynasty.
这些结果是利用如下的两种方法获得的：其一是历史上地震数据的定性资料分析，其二是利用非齐次马尔柯夫模型的定量计算。
The prediction is made using the following 2 methods: the deterministic statistical analysis of the historical seismic data and the computation by means of the inhomogeneous Markov model.
知识有两种。其一是我们对一个问题的有关知识已经精通，其二是我们明白从哪里去查到有关知识。
Knowledge is of two kinds. We know a subject ourselves, or we know where we can find information upon it.
该方案的实现主要包括两大部分，其一是低频dds信号产生部分，其二是高频信号合成部分。
The realization of the project is mainly composed of two parts. The first part is low frequency signal generator based on DDS, and the second part is high frequency signal synthesizer.
中国新诗具有两种“传统”：其一是新诗与古典诗歌传统的关系，其二是新诗自身的传统。
New Chinese poems have 2 "traditions" : one is the traditional relationship between classical and new poems, and the other, the tradition of the new poems of their own.
选题的动因大抵有两种，其一是兴趣；其二是角色要求。
The selected topic agent generally speaking has two kinds: interest and role request.
标准化决策强调建立数学模型，它有两个必要的前提假设：其一是个体有稳定的偏好系统，其二是计算能力强大。
Normal decision making is deeply involved in setting up mathematical models. It has two indispensable prerequisites: There is a stable preference system and a large capacity of calculation in human.
COREX的主要问题有两个，其一是煤耗过高，其二是仍需使用一定比例的焦炭，以补充有效热值和形成含碳固定床。
There are two main problems in the process. Coal consumption of COREX is too much and coke is still used to supply effective calorific value of coal and form a fix bed with carbon.
农户的借贷行为主要有两种途径：其一是通过农村的外生金融机构，其二是依赖于农村中的内生金融组织。
There are mainly 2 kinds of lending and borrowing activities of countryman: though external financial institutions and depend on internal financial organizations in the country.
农户的借贷行为主要有两种途径：其一是通过农村的外生金融机构，其二是依赖于农村中的内生金融组织。
There are mainly 2 kinds of lending and borrowing activities of countryman: though external financial institutions and depend on internal financial organizations in the country.
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