Even so, the surviving records of North America do contain references to deadly epidemics among the indigenous population.
尽管如此，现存的北美记录确实提到了土著居民中发生的致命流行病。
First, we examined consumption function model which doesn't contain the age structure of population variables and we conduct a brief analysis.
首先，我们检验了不含人口年龄结构变量的消费函数模型，并对结果进行了简要的分析。
Last year, the team lowered the mosquito population by 90 percent during a trial using the same method and helped to contain a local outbreak of dengue fever.
去年，为了帮助控制局部暴发的登革热，该团队使用同样的方法在一个试点区域内将蚊子数量降低了90%。
Bird songs and calls as one of the most important features, which contain abundant biological information, are vital for the research of Avi-behavior, bird population structure and classification.
鸟类的鸣声中包含有丰富的生物学信息，研究鸣声对于了解鸣声与行为的关系、鸟类的种群结构及种属分类具有重要的实际意义。
Last year, the team lowered the mosquito population by 90 percent during a trial using the same method and helped to contain a local outbreak of dengue fever.
去年，该实验组用相同的方法减少了九成的蚊子数量，并且控制了登革热病的爆发。
Such galaxies, called ellipticals, contain a population of old stars, usually with little apparent gas or dust, and few newly formed stars.
这样的星系，称为椭圆星系，包含人口的老明星，通常没有明显的气体或尘埃，以及一些新成立的星。
As a result, the floating population to contain the spread of HIV is no time to lose.
因此，遏制流动人口的艾滋传播已刻不容缓。
As a result, the floating population to contain the spread of HIV is no time to lose.
因此，遏制流动人口的艾滋传播已刻不容缓。
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