In this paper we study the stability for equilibrium points of equations in two-population dynamics.
本文研究两种群动力学方程平衡点的稳定性。
If two flying insect populations took up residence in separate nearby valleys, chances are that individuals from each population would fly back and forth, continuing gene flow.
如果有两个飞行昆虫种群居住在相距不远的不同山谷中，那么任一种群中的个体都有可能来回飞行，从而使基因流动继续。
To stabilize its population—discounting immigration—women must have an average of two children.
为了稳定人口——减轻移民的影响——妇女必须平均生育两个孩子。
Before the arrival of Europeans, the islands in the two largest cultural areas, Polynesia and Micronesia, together contained a population estimated at 700,000.
在欧洲人到来之前，波利尼西亚和密克罗尼西亚这两个最大的文化区，住着大约70万人。
Once the hare population has declined, it takes two to three years for the quantity of twigs to recover.
一旦野兔数量减少，嫩枝的数量需要两到三年的时间来恢复。
There are two other kinds of research that have thrown some light on the origins of the Native American population; they involve the study of teeth and of languages.
还有另外两种研究对印第安人的起源提供了一些线索；它们包括对牙齿和语言的研究。
The chipmunk population increased strikingly due to two successive years of abundant acorn crops in the forest.
金花鼠数量显著地增加，是因为森林里连续两年丰硕的橡子收成。
With the opening of the two-child policy, the population of China will become larger.
随着二孩政策的开放，中国的人口将会变得更多。
The tragedy surrounding those two storms underline just how maladapted major population centers in the region are to today's conditions.
从那两场灾难就可以看出该地区主要人口密集区与当前环境的强烈不适。
Two-thirds of Calcutta's population live in the bustees.
加尔各答三分之二的人口住在贫民窟。
Slovenia, whose population of two million is about half that of Ireland, will be at the finals for a second time.
斯洛文尼亚拥有两百万人口，相当于爱尔兰的一半，这是他们第二次进军世界杯决赛阶段。
Even if each of those women has only two children, population will coast upward under its own momentum for another quartercentury.
即使每位妇女只要两个孩子，人口也会根据自己的势头再向上升二十五年。
Thus, large Numbers of coin hoards are a good quantitative indicator of population decline, two researchers argue in in the Proceedings of the National Academy of Science Monday.
因此，大量的钱币窖藏是人口减少的风向标，两位研究人员在《国家科学院科学星期一公报》上就此发表了一些看法。
Janet K. Swim, professor of psychology, Penn State, and her colleagues report that growing consumption and growing population are two significant contributors to human impact on the environment.
心理学教授简尼特k斯维姆和她的同事作的报告称，不断增加的消耗和不断上升的人口数量是人类对环境产生的两个重要影响因素。
Some 2.5 billion people – two fifths of the world's population – are now at risk from dengue.
占世界人口五分之二的约25亿人面临罹患登革热危险。
Japan, Europe and Russia could lose between one-half and two-thirds of their population by 2100.
在2100年前，日本、欧洲和俄罗斯的人口，可能会减少二分之一至三分之二。
By mid-century, two-thirds of the world's population will live in cities. The demands for energy, water, housing, and education will be enormous.
到本世纪中叶，世界人口的三分之二将居住在城市，对能源、水、住房和教育的需求将是巨大的。
In Thailand, for example, more than a quarter of the population owns a two-wheeler.
例如在泰国，拥有摩托的人数高达全部人口的四分之一。
Australian politicians are sensitive about rate increases as more than two-thirds of the population own homes, compared with less than 50 percent in some European nations.
澳洲的政客们对利率升高很敏感，因为超过三分之二的澳洲人拥有房子，而某些欧洲国家拥有率只有50%。
Vietnam's agricultural sector employs more than two-thirds of the country's population and accounts for a major proportion of exports.
超过三分之二的越南人口都从事农业生产，而且农业产品是越南的主要出口商品。
If you measure the Numbers correctly, two-thirds of the world's population will probably suffer double-digit rates of inflation this summer (see article).
仔细分析这些数据后不难发现，今年夏天世界上三分之二的人口将受到呈双位数增长的的通货膨胀的影响。
In 2008 and 2009, two psychoanalysts visited a population group in the Amazon rainforest who place great emphasis on dreams and dream interpretation.
2008年和2009年，两名精神分析师探访了一群亚马逊雨林的居民，因为这群居民十分重视梦境以及对应的解析。
More than a billion people in Asia live within 100 kilometres of the sea, and two-thirds of the population of Latin America and the Caribbean live within 200 kilometres.
亚洲有十多亿人生活在距海100公里之内，拉丁美洲和加勒比区域三分之二的人生活在距海200公里之内。
The chart below shows a population-weighted history of the past two millennia.
下表展示了过去两千年以来按人口加权的历史。
Two-thirds of the rural population remains poor.
三分之二的农村人口生活在贫困线以下。
Two-thirds of the rural population remains poor.
三分之二的农村人口生活在贫困线以下。
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