To start with, it forced the population to abandon the nomad's life and became sedentary, to develop methods of storage and, often, systems of irrigation.
首先，它会迫使人们放弃游牧生活定居下来，因而使人们开发存储的方法，往往也会开发灌溉系统。
In both these systems, the overwhelming majority of the population is equal and powerless.
在这两个系统中，占绝大多数的人口都是平等而软弱无力的。
Again, in the absence of well-functioning health systems, we are unlikely to get even the most basic population data on morbidity and mortality.
同样，如果缺乏运转良好的卫生系统，我们甚至不可能获取关于发病率和死亡率的最基本的人口数据。
We have nothing against small scale, low output, farming systems but to suppose this is a model which will feed the world's growing population is disingenuous.
我们绝不反对小规模，低产出的农业系统，但设想用这样一个模式来养活世界不断增长的人口未免不够现实和真诚。
As possible fields of application, Pollack named environmental systems, weather patterns, population genetics, cosmology and oceanography.
波拉克列举了可能应用的领域，如环境系统、气候模式、群体遗传学、宇宙学和海洋学。
Another one;a failure to promptly identify the complete population of service water, valves affected by the systems corrosive environment.
另一个是，一个迅速被确定为工业水,的全部的部分，受系统纠正环境影响的管道。
This situation is causing alarm among the population and overloading healthcare systems.
这一状况对当地人民和其不堪重负的医疗体系敲响了警钟。
Depending upon which services are deployed and how heavily the systems are used, such a system could support a relatively large population of registered users.
依据所部署的服务和系统的使用程度，此类系统可以支持相对较大的注册用户群。
Frields noted that systems requiring this driver are fairly numerous, so the affected population is significant.
Frields表示需要这种驱动的系统非常多，因此影响的人群会非常大。
According to the report, more than one million people or 80 percent of Gaza's population is now dependent on food aid and that Gaza's power, water and sewage systems have collapsed.
这份报告说，有超过100万的加沙居民目前靠食品援助生活，这相当于这一地区总人口的80%。此外，加沙的电力、供水和污水处理系统也都已经瘫痪。
I believe we must reach these Goals, as the ability of countries to adapt to climate change will depend on the state of population health and the systems in place to protect it.
我认为，我们必须实现这些目标，这是由于国家适应气候变化的能力取决于人群健康状况以及保护健康的已有体系。
The health of prisoners is among the poorest of any population group and the apparent inequalities pose both a challenge and an opportunity for country health systems.
囚犯的健康是任何群体中健康情况最差的，这种明显的不平等现象对国家卫生系统既是挑战又是机遇。
The majority of the world's population is denied adequate access to safe and appropriate medical devices within their health systems.
世界上的大多数人口无法在其卫生体系内得到安全、适当的医疗装置。
Dynamical systems examples from mathematical biology and population dynamics.
来自生物数学和种群动力学的动力系统的例子。
Resulting systems will scale up to very large population.
最终系统会扩展到很大的适用人群。
Human population growth is increasing the built footprint, which in turn is straining the capacity of natural wetland systems.
人类人口的增长扩大了人造环境的占地面积，而后者又使自然湿地系统超负荷运转。
Communities around the country are struggling to maintain and upgrade aging water systems that are groaning under the stain of a growing population.
城市及农村周围的社区都竭力维持和更新老化的供水系统，目前这一系统已不堪重负，这是人口增长而造成污染增多的结果。
Here, growth regularity of leaf tillers and population structure of winter wheat seeded on suitable time, and the four cultivation systems are introduced in detail.
本文较详细地介绍了适期播种的冬小麦叶蘖生长规律、群体结构及四大栽培体系的技术特点。
The main plant population had different compensation in the two grazing systems.
两放牧处理主要植物种群的补偿性生长情况各异。
In this paper, using the methods in nonlinear analysis, this present paper, studies the quasilinear parabolic systems in population dynamics, and obtained the existence of the global solution.
本文采用非线性分析方法，研究生物种群动力学中一类拟线性抛物系统，得到解的整体存在性。
Over 100 countries, representing more than two-thirds of the world's population, do not have systems for civil registration and vital statistics that produce reliable data on causes of death.
共有100多个国家(占全球三分之二以上人口)缺乏能够提供可靠死因数据的民事登记和生命统计系统。
Method The dynamic changes of natural infections of the population and mosquito vectors were studied by vertical and horizontal surveillance systems.
方法通过建立纵向、横向监测系统，观察人群和蚊媒的自然感染变化情况。
The third part: Mainly forms the mechanism on the Kunming transient population community to launch the analysis, and carries on the systems assessment to the transient population community.
第三部分：主要就昆明流动人口聚居区形成机制展开分析，并对流动人口聚居区进行系统评价。
These results suggested that it might be possible to apply TCS in activated sludge systems to reduce the excess sludge production but it might influence the population in sludge.
以上结果表明，可以应用TCS来降低活性污泥工艺中的剩余污泥产量，但对污泥的种群结构有一定的影响。
Maintaining a healthy population in the 21st century will require systems engineering approaches to redesign care practices and integrate local, regional, national and global informatics networks.
在21实际维持健康的人口将要求系统工程学方法重新设计保健实践，并整合本地、地区、国家以及全球信息学网络。
Because of local government' s construction and population increasing in recent years many rare and endangered plants are extincted, meanwhile forest systems are damaged.
由于近年来井冈山林区的城市化建设以及人口增加过快等因素的影响，致使许多珍贵稀有植物濒临灭绝，森林生态系统遭到严重破坏。
Taking the grazing ecological systems as an example, the positive and negative feedback of the density dependence population regulations was analysed.
以放牧生态系统为例，本文分析了系统组分种密度相关的种群调节中的正、负反馈和机制。
Taking the grazing ecological systems as an example, the positive and negative feedback of the density dependence population regulations was analysed.
以放牧生态系统为例，本文分析了系统组分种密度相关的种群调节中的正、负反馈和机制。
应用推荐