Because it's a very complex, very dense urban environment.

因为这样的地方有着非常复杂和密集的城市环境。

And planting trees in urban environments has even been found to reduce crime.

人们发现，在城市中植树甚至还减少了犯罪。

He and his colleagues are interested in why some birds thrive in urban environments.

他和同事对有些鸟类在城市环境中繁衍生息的原因很感兴趣。

It sort of adds a little beachiness to what is usually a pretty urban environment.

这个景点为此处颇为都会的环境增添了一点海滩气息。

They say they wanted to understand how different parts of the urban environment affect mental wellbeing.

他们称，想了解不同的城市环境是如何影响心理健康的。

They're working with the Libyan government to find targets. But it's hard. This is an urban environment.

他们将和利比亚政府合作，共同寻找打击目标。但是这很难做到。因为那里是城市环境。

Jonathan Atwell, in Indiana University, is looking at how a range of animals respond to urban environments.

印第安纳大学的Jonathan Atwell正在研究一系列动物如何对城市环境做出反应。

What are the specific aspects of the urban environment which causes some people to develop mental health issues?

城市环境具体从哪些方面引发心理健康问题呢？

Many of the new parents moved to homes in the new suburbs built outside the urban environment of cities.

许多新父母把家安置在了城市之外的新郊区。

Since then, research has demonstrated that green space can have a substantial physical and psychological impact on our urban environments.

从那时起，研究表明，绿地可以对我们的城市环境产生实质性的生理和心理影响。

That's a doubling of the urban environment.

这是城市环境的两倍。

Cars and air conditioning add more to the urban environment.

汽车和空调为城市环境增添了更多色彩。

Some did it in urban environments, some in the forest.

有些是在城市环境中进行的， 有些是在森林中进行的。

Now, in evolutionary terms, urban environments represent huge upheavals, the sorts of massive changes that usually happen over millions of years.

用进化的术语来说的话，城市的环境代表着很大的变动，就是那种经过数百万年才会造成的巨大改变。

There are other challenges in maintaining trees in the urban environment.

在城市环境中维护树木还有其他挑战。

Urban environments, mountainous terrain and poor infrastructure can really worsen the effects.

城市环境、山区地形和落后的基础设施确实会使影响恶化。

High-rise residential towers, isolated office parks, and extensive road networks became prominent features of urban environments.

高层住宅楼、孤立的办公园区和广泛的道路网络成为城市环境的显着特征。

The first one is street skateboarding which focuses on flat ground tricks grinds slides and aerials within urban environments and public spaces.

第一个是街头滑板，集中在城市环境和公共空间的平地技巧、滑滑梯和空中天线。

They can construct sophisticated nest structures in any urban environment like these populations in Miami and Barcelona.

它们可以在任何城市环境中建造复杂的巢穴结构，就像迈阿密和巴塞罗那的这些种群一样。

Squirrels can navigate the wild just as dexterously as urban environments— landing impressive jumps as they leap between trees.

松鼠可以像在城市环境中一样灵巧地在野外航行——在树间跳跃时令人印象深刻的跳跃。