To keep up with migration patterns, postal services were added to existing businesses.

为了跟上移民的模式，已有的产业同时也会提供邮政服务。

So, to figure this out, scientists look at migration patterns, stone tools, carved shells, cave art, and other artifacts.

因此，为了弄清这一点，科学家们研究了迁徙模式、石器、雕刻贝壳、洞穴艺术和人造制品。

Cardinals do not follow a yearly migration pattern like many other birds, so you may be able to attract them all year round.

北美红雀不像其他鸟类每年迁徙，所以你整年都能尝试吸引他们。

I know all these statistics because I study global migration patterns.

我知道所有这些统计数据， 因为我研究全球移民模式。

BirdCast is part of a global effort to better understand migration patterns and encourage people to turn off their lights for migrating birds.

BirdCast 是全球努力的一部分，旨在更好地了解迁徙模式，并鼓励人们为候鸟关灯。

These sites give us invaluable knowledge about our ancestor's migration patterns, hunting methods, and technologies.

这些遗址为我们提供了有关祖先迁徙模式、狩猎方法和技术的宝贵知识。

One of our main jobs is to keep detailed records of the migration patterns of raptors.

我们的主要工作之一是详细记录猛禽的迁徙模式。

But by analyzing the collection of bio-duck sounds recorded over the decades, researchers may now be able to track their population size and migration patterns.

但通过分析近十几年来收集并记录到的类似鸭子的声音信息，研究人员们目前能够据此推测出它们的种群规模，数量以及迁徙活动模式。

Disrupted migration patterns, changed breeding seasons, and shifting habitats are but a few examples of how climate change impacts fauna around the globe.

迁徙模式的破坏、繁殖季节的改变和栖息地的变化只是气候变化如何影响全球动物群的几个例子。

On the other hand, there are fears that lagoons might harm both fish and birds, for example by disturbing migration patterns, and causing a build-up of silt, affecting local ecosystems.

在另一方面，有很多人害怕泻湖可能会危害鱼类和鸟类，比如说会扰乱迁徙路线，导致泥沙堆积，影响当地的生态系统。

Based on migration patterns, anatomy, and tool-making, most scientists estimate that our ancestors could produce well-formed, meaningful sentences by around 200,000 years ago, though some argue truly modern language is only 50,000 years old.

根据迁移模式、解剖学和工具制造，大多数科学家估计，我们的祖先在大约20万年前就可以组织出结构良好、有意义的句子，尽管有人认为真正的现代语言只有5万年的历史。

The maps can also be used to study things like ecotones, the boundary between two habitat types, species dispersal and the migration patterns, and even determine when a species was found in a new area.

这些地图还可以用来研究过渡带，两种栖息地类型之间的边界，物种扩散和迁移模式，甚至可以确定一个物种何时在一个新的地区被发现。