populations

"Most people would love to get students from more underserved populations, but they just can't get them in the door."

大多数人喜欢从更多的弱势群体中选才，但却不会上门选才。

Melon F2 Populations Traits Analyse and Genetic Map Primers Selected

甜瓜F2群体性状分析及遗传图谱引物筛选

It can also be exploitative, especially when used with vulnerable populations.

它也可以被滥用，对弱势群体来说尤其如此。

rural areas with sparse populations

人口稀少的农村地区

In the absence of wolves, coyote populations also grew quickly ．

在没有狼的情况下,郊狼的数量也迅速增长。

Fish populations assume highly localized distributions within each river.

鱼群分布集中在每条河的某些区域.

F2 populations also presented normal segregation.

而F2出现了正常分离的带型。

Send garden soil sample to a biological soil test laboratory to analyze microbe populations.

花园土壤样品发送到生物土壤测试实验室分析微生物种群。

Interesting distinctions can be drawn between the two populations.

比较两类人可以发现有趣的差异。

"An individual's genetics has a big influence on their height, but once you average over whole populations, genetics plays a less key role," he added.

他补充说:“一个人的基因对其身高有很大的影响，但是一旦把他们的身髙平均到整个人群中，基因的作用就不那么重要了。”

As conservation areas become smaller, lions are increasingly coming into contact with human populations, which are expanding to the boundaries of these protected areas.

随着保护区变得越来越小以及人类的活动扩张到了这些保护区的边界，狮子跟人类的接触也就越来越多。

Elk, deer, and coyote populations are down, while beavers and red foxes have made a comeback ．

麋鹿、鹿和郊狼的数量正在下降,而海狸和红狐的数量有所上升。

Figure 1.15 shows which provinces lost populations between 1910 and 1920.

表1.15显示出哪些省份在1910至1920年间人口减少了。

Differential Performances and Invasion Patterns in Aquatic Plant Eichhornia Crassipes ( Pontedriacae) Populations

水生植物凤眼莲的种内基因型差异与入侵模式

In the 1960s, scientists proposed that predators at the top of a food web had a surprising amount of control over the size of populations of other species---including species they did not directly attack ．

20世纪60年代,科学家们提出,食物网顶端的捕食者对其他物种（包括它们没有直接攻击的物种）的数量有着惊人的控制力。

Marine life may be affected too ： El Ninos can reduce the rising of the cold, nutrient-rich water that supports large fish populations, and the unusually warm ocean temperatures can destroy coral.

海洋生物也可能受到影响：厄尔尼诺现象会减少大量鱼类种群赖以生存的营养丰富的冷水的上升,异常温暖的海洋温度也会破坏珊瑚。

Relocation is costly and cannot go on forever in a region with swelling rural human populations.

随着农村人口的增加，这种迁移活动不可能在一个地区长期进行。

Without upgrades and new capacity, bridges, roads and power systems are unable to cope with expanding populations.

但没有升级和新技能力的情况下，桥梁、道路以及电力系统很难满足不断增长的人口的需求。

More than 100 years ago, American sociologist W. E. B. Du Bois was concerned that race was being used as a biological explanation for what he understood to be social and cultural differences between different populations of people.

100多年前，美国社会学家W·E·B·杜波依斯担心种族正在被用来从生物学层面解释他所理解的不同人群之间的社会和文化差异。

countries with ageing populations

人口老龄化的国家

This policy has led to a dramatic increase in our prison populations.

这项政策已经让我们监狱的囚犯人数激增。

Natural populations are small and susceptible to disturbance and habitat destruction.

种群小,易受生境破坏影响.

As such, different populations of killer whales have had to learn different hunting techniques in order to gain the upper hand over their local prey.

正因为如此，不同种群的虎鲸必须学习不同的捕猎技巧，以便在追捕当地猎物时占据上风。

Among human populations, culture not only affects the way we live, but also writes itself into our genes, affecting who we are.

就人类而言，文化不仅影响着我们的生活方式，而且还被写进了我们的基因里，影响着我们成为怎样的人。

Deer and elk populations — major food sourcesfor the wolf – grew rapidly ．

鹿和麋鹿是狼的主要食物来源，它们繁殖的速度非常快。

Leaving some fields fallow provided a natural check on insect populations.

让一些土地休耕是自然控制昆虫数量的办法.

Many species, for example, originate in small populations.

例如, 不少生物种就起源于一个很小的群体.

...a commitment to give succour to populations involved in the conflict.

要向战争中受难的人们提供援助的承诺

They had not been exposed to most diseases common to urban populations

城市人口中多数常见的疾病他们都没有接触到。

The ethnic populations are so intermingled that there's bound to be conflict.

各民族人口如此杂居，肯定会发生冲突。