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

高海拔地区，空气要稀薄得多，所以氧气含量很少。

It's high altitude so the temperatures are quite cool in the day.

那里海拔很高，白天气温非常凉爽。

They get up into high altitude air currents.

它们可以进入高空气流飞行。

Many of kyrgyzstan natural wonders are very rural and in high altitudes, so the timing of your visit is crucial.

吉尔吉斯斯坦许多自然奇观位置偏远，海拔偏高，所以选择旅行时间至关重要。

But the goal here is to keep making this bigger and more effective so it can reach out further, hit targets further away, engage bigger missiles at higher altitudes and you know what that's all about.

但是这里目标是继续使它变得更大，更有效，以便它可以进一步伸展，进一步击中目标，更高高度接合更大导弹，你知道这是怎么回事。

Which of these cloud types is typically found at the highest altitude?

这些云类型中哪个通常是最高海拔处被发现？

One of the only kind of animals living in this high altitude.

这是该地唯一一种活这种高海拔地区动物。

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高海拔地区训练和经验。

A large plane with padded walls flies to high altitude and then goes into a nosedive- or a fast and sudden fall - which creates short periods of weightlessness.

机舱壁经过填充飞机到达高海拔之后突然俯冲会造成短时间失重。

Before the age of rockets and the great space race, we were using high altitude balloons to take people to the edge of space.

火箭时代和激烈太空竞赛之前，我们使用高空热空气球把人们带到太空边缘。

They believe there's methane gas around Pluto that's more concentrated at its higher altitudes and that's where it forms froth on the dwarf planet's mountain tops without the need for wind or precipitation.

科家们相信冥王星周围甲烷气体更集中它高海拔地区，那里不需要风或降水，矮行星山顶就能形成冰霜。

This made them likely to crash under the enormous stress of high altitudes.

这使得它们很可能高空巨大压力下会破裂。

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

埃塞俄比亚高地人们已经适应了高海拔地区活。

Since the atmospheric pressure is a lot lower in high altitudes, it would be freezing cold if you were flying above the clouds.

高海拔地区，由于大气压力很小，气温会降低。如果你云层上面飞行。

People do get high altitude pulmonary edema and high altitude cerebral edema here as well.

这里也会发高原肺水肿和高原脑水肿。

The latest incident was a high altitude object shot down on Sunday by an F- 16 over Lake Huron which lies between Michigan and Ontario.

最近一起事件是周日，一架F- 16战斗机密歇根州和安大略省之间休伦湖上空击落了一个高空物体。

At this high altitude you can clearly see storm churn white caps in the ocean.

这么高海拔上，你仍然可以清楚地看到海洋风暴中被搅动起来白色帽子。

Polaris Dawn will reach its highest altitude on its first day.

“北极星黎明号”将第一天达到最高高度。

Experts say La Nina tends to reduce high altitude winds that weaken hurricanes.

专家表示，拉尼娜现象往往会减少高空风，从而削弱飓风。

Higher altitude combined with the bulge creates the weakest gravity anywhere on the planet.

高度和纬度造就了地球上重力最弱地区。