Removing the mud, uncovering gravel beds where fish spawn, and finding suitable salmon types to rebuild the population is a daunting task.
清除淤泥，发现鱼类产卵的砾石层，找到合适的鲑鱼种类来重建种群是一项艰巨的任务。
The authors suggest further research is needed to confirm and generalize their findings to the wider population and to other types of music.
作者指出证实和总结对更广人口和其他类型音乐的发现的进一步研究是必要的。
About 4% of the population has “amusia” of one sort or another, and at least some types of amusia are known to be heritable.
约4%人口患有各种程度的“失歌症”，并且我们已经知道至少某些失歌症具有遗传性。
From 30 to 50, the population is about evenly split, but after age 50, most people aremorning types.
30岁到50岁，二者人数大约持平。但50岁之后，早晨类型的人居多。
Studies have shown that entrepreneurs of all types are more prone to it than the general population.
当然，是从一开始就表现出来的。研究表明，企业家们更有可能比普通大众表现出这种情绪。
The spawning times, absolute fecundities, age structures of breeding population, and spawning types of fish were also studied.
测定分析鱼类生殖力、产卵期、繁殖群体的年龄结构及产卵类型。
As the important index in the study of human population genetics, tongue moving types and behavioral traits of lateral functional dominance are correlative with genomic factors.
舌运动类型特征和一侧优势功能特征与遗传因素有关，是人类群体遗传学研究的重要指标之一，目前多数特征的遗传方式尚未确定。
This paper also provides the habitat types and factors affecting the distribution and population of Saunders' s Gull.
本文初步讨论了黑嘴鸥的栖息地类型和影响黑嘴鸥种群数量变动的主要因素。
Population studies have linked the consumption of tea with a reduction in risk for several types of cancer.
依据关于人口的研究指出：饮用茶饮可减少许多癌症类型的发生率。
The model that the population contrary to two kinds exporting types flows of type that inputs floating population exists in the area of the Changjiang Delta with developed economy.
经济发达的长三角地区存在着流动人口输入型和输出型两种相反的人口流动模式。
Except for environment factor, the infection of different types of HCV, there exists difference of genetic susceptibility which can lead to various effects in human population.
除了环境因素即不同类型HCV的感染，人群中确实存在着易感性的差异，从而使他们对HCV感染产生不同的效应。
Both types of researchers were convinced that their findings are the most decisive, having higher importance than the findings of the other scientist population.
研究人员的两种类型确信与其它科学家人口的结论相比较，他们的结论是最决定性，有的更高的重要性。
Objective to find out the types of the breeding places of the mosquito larvae and the distribution characteristics of the natural mosquito population in urban area of Guangzhou.
目的了解广州市城区蚊虫自然种群幼虫的孳生地类型及种群分布特点。
This paper analysis the types of rodent population dynamics and models about forecast are also introduced.
本文分析了草原害鼠年度波动类型，影响鼠类波动的因素，以及不同预测模型的特点。
Therefore the manage mode of farmland, the implement of policy and the change of population are the main factors that affect the land-types variation in the two study area of Qitai oasis.
所以耕地的经营模式、政策的实施以及人口的变化是影响奇台绿洲内部两个子研究区各土地类型变化的主要因素。
Results the results showed that the mean scores of all factors in heroin addicts were higher than those of normal population, and there had difference between difference types of heroin addicts.
结果海洛因依赖者症状总分，总均分及所有因子分均显著高于全国常模，不同类型的海洛因依赖者测评结果有差异。
OECD and UNESCO classify cross-border education into three types, population flow, program flow and institution flow.
OECD和UNESCO将跨境教育区分为人员流动、项目流动和机构流动三种方式。
Its distribution and population number were investigated with site-plot methods in this paper, and its floristics composition and types of Community were analysed too.
本文采用密度生境样方法对夏蜡梅的分布数量进行了调查和研究，并对其区系成分、群落类型进行了分析。
Its distribution and population number were investigated with site-plot methods in this paper, and its floristics composition and types of Community were analysed too.
本文采用密度生境样方法对夏蜡梅的分布数量进行了调查和研究，并对其区系成分、群落类型进行了分析。
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