Because the air is substantially thinner at high altitudes there is substantially less oxygen.

因为在高海拔地区，空气要稀薄得多，所以氧气含量很少。

People in the Ethiopian highlands have adapted to living at high altitudes.

埃塞俄比亚高地的人们已经适应了高海拔地区的生活。

This is that harness that I wear at high altitude.

这是我在高海拔时戴的安全带。

This is why it's so much harder to breathe at higher altitudes.

这就是为什么在高海拔地区呼吸要困难得多。

Among them are requiring the climbers themselves to have training and experience at high altitudes.

其中包括要求登山者自己具备在高海拔地区的训练和经验。

We can also use aerial photographs. . . pictures taken by cameras at high altitude above the earth.

我们也可以使用航拍照片，用摄影机在地球之上的高空拍摄。

It is soft, light, and warm-the ideal coat for an animal which was to survive at high altitudes.

它柔软光亮，这种皮毛适用于高海拔地区。

There's lower oxygen pressure at higher altitudes, which means there's less oxygen available to transfer to the lungs.

高海拔地区的氧气压力较低，这意味着输送到肺部的氧气较少。

One of the adaptations that the body makes after it's been at high altitude is to make more hemoglobin.

在高海拔地区，身体的其中一个适应就是制造更多的血红蛋白。

The missing miners were working for a subsidiary of a state-owned gold mining company at high altitude in a mountainous region.

失踪的矿工为山区高海拔一家国有金矿公司的子公司工作。

People in Ethiopian highlands have adapted to living at high altitudes.

埃塞俄比亚高原的人们已经适应了在高海拔地区的生活。

For example, it also helps reduce the stress of exercising at high altitude.

例如，它还有助于减轻高海拔运动的压力。

So, all the cabins of airplanes that cruise at high altitude must be pressurized.

所以，所有高空巡航的飞机的机舱都必须加压。

At higher altitudes there is not much oxygen to breathe.

在高海拔地区， 呼吸的氧气不多。

We can also use aerial photographers...pictures taken by cameras at high altitude above the earth.

我们还可以使用航空摄影师… … 在地球上空的高空用相机拍摄的照片。

It was also suggested that the mountain could provide a huge surface to place solar panels on in addition to windmills at higher altitudes.

还有人认为，除了在高海拔地区放置风车外，这座山还可以提供一个巨大的表面来放置太阳能电池板。

The floating airship can collect data at high altitude, which is used to track the regional water cycle and monitor changes in atmospheric composition.

浮空艇可以在高空收集数据，用于跟踪区域水循环和监测大气成分的变化。

You may have said or heard someone else say that the air is thin at high altitudes.

你可能说过或听到别人说，高海拔地区空气稀薄。

Most of the lower-lying glaciers in the area they inhabit have disappeared, and those at higher altitudes have retreated by as much 10km (6 miles).

这些居民住处周围有冰川存在，而这些位于低纬度的冰川大多数已经消失不见，而高纬度的冰川覆盖范围也减少了多达10公里（6英里）。

Athletes sometimes train at high altitude to improve their hemoglobin so that they are capable of carrying more oxygen when they are at sea level.

运动员有时在高海拔地区训练以提高他们的血红蛋白，这样当他们在海平面上时，他们就能够携带更多的氧气。