This brown fog can be found covering densely packed cities, making seeing difficult and breathing hazardous.

这种褐色雾气可能会覆盖人口密集的城市，让视线变差，呼吸也会有危险。

We have hair, but our hair is not densely packed all over like our closest relatives.

我们有毛发，但我们的毛发不像我们的近亲那样全身密密麻麻。

The atomic nucleus is densely packed with protons and neutrons bound by a powerful nuclear force.

原子核密集地包裹着由强大核力所束缚的质子和中子。

This means that animal products, which are more densely packed with proteins than veggies, contain more nitrogen.

也就是说动物产品比蔬菜含有更多的蛋白质，包含更多的氮元素。

In every color of eye, the back, most inside layer of the iris is densely packed with dark melanin.

在眼睛的每一种颜色中虹膜最内层的后部都充满了黑色素。

Others are densely packed with galaxies in regions known as superclusters.

其他星系在被称为超星系团的区域中密密麻麻地挤满了星系。

Fields densely packed with a single crop are like a table set for locusts.

田地密密麻麻地种着一种作物，就像为蝗虫准备的桌子。

These densely packed farms had little biological diversity, making them ripe for disease epidemics.

这些密集的农场几乎没有生物多样性，使它们成为疾病流行的时机。

They're so densely packed together that just a thimble full of neutron star material would have the mass of 100 million tons.

它们紧密地挤在一起，仅仅一个装满中子星物质的顶针就有一亿吨的质量。

Scientists think this is probably thanks to the densely packed, unbranched, stable structure of its molecular chains.

科学家们认为这可能要归功于其分子链的密集、无支链、稳定的结构。

The sun is only able to melt the snow on the surface, so huge, densely packed snow piles can take a while to melt.

太阳只能融化表面上的雪，因此巨大且密集的积雪需要一段时间才能融化。

In the densely packed district of Mongkok, the democracy camp has maintained the position for much of the past week.

在人口稠密的旺角区，民主阵营在过去一周的大部分时间里都保持着阵地。

The fovea is the area in the center of your vision where the photoreceptors are most densely packed, and where your vision is the sharpest.

中央凹是你视觉中心的区域，那里的光感受器密度最高，你的视觉最清晰。

And unlike open spaces where hot  air can be widely dispersed densely packed buildings typically disrupt  airflow and can make it hotter.

与热空气可以广泛散布的开放空间不同，密集的建筑物通常会扰乱气流并使其变得更热。

But as growing populations and densely packed cities stress these systems, innovators around the world are imaginating faster more sustainable ways to get from A to B.

但不断增长的人口和密集的城市对这些交通系统造成了压力，世界各地的革新者都在设想从A地到B地的更快更可持续的方式。

The two sorts of brain look different, too. Stutterers tend, for instance, to have more densely packed grey matter in the areas associated with processing and producing sounds.

两者的大脑看起来也不同。比如，有关处理和产生声音的区域上覆盖的灰质，口吃者要更密集。

And I'm using a fluffier brush so that the powder is not as densely packed onto the face. It's just going to give more of a sunkissed color.

我用了一个更蓬松的刷子这样粉末就不会那么密集地堆积在脸上。这样看起来更像被阳光晒过。

And even when researchers were able to get it under the microscope, the tissue was so densely packed it was impossible to see much.

即使研究人员能够在显微镜下看到它，组织也非常密集，无法看到太多。

But the difficulty of reaching the door through the scattered chairs and the densely packed crowd increased their natural desire to escape, into something like panic.

但是穿过散乱的椅子和密密麻麻的人群很难到达门口，这增加了他们逃跑的本能欲望，陷入了恐慌。

About a foot or eighteen inches of the ends of the branches is densely packed with stiff outstanding needles which radiate like an electric fox or squirrel's tail.

大约一英尺或十八英寸的树枝末端密密麻麻地布满了坚硬的针叶，它们像电狐或松鼠的尾巴一样散发出来。