They were flying at high altitude.
他们正在高空飞行。
The plane made a dive to a lower altitude.
飞机俯冲到较低高度。
We are flying at an altitude of 6 000 metres.
我们的飞行高度是6 000米。
The aircraft had reached its cruising altitude of about 39,000 feet.
那架飞机已经达到了大约三万九千英尺的巡航高度。
The mountain has an altitude of 1,500 metres.
山高1500米。
A few precautions can help most climbers avoid altitude sickness.
一些预防措施可以帮助大多数登山者避免高原反应。
Your body needs to get used to a high altitude before you climb to an even higher one.
在你爬到更高的地方之前，你的身体需要适应高海拔的环境。
Besides these symptoms of altitude sickness, others such as headache and fatigue may also occur.
除了这些症状外，高原反应还可能出现头痛和疲劳等其他症状。
The lower oxygen pressure found in an aircraft cabin is equivalent to that at 6,000-8,000 feet of altitude.
机舱里的氧分压会更低，其数值跟6000到8000英尺高空的氧分压值一样。
Just at this time NASA decided to test some new high-altitude cameras by taking photographs of Yellowstone.
就在这个时候，美国国家航空航天局决定通过拍摄黄石公园的照片来测试一些新的高空照相机。
One of the most common dangers to climbers is altitude sickness, which can affect even very experienced climbers.
登山者最常见的危险之一是高原反应，即使是非常有经验的登山者也会受到影响。
The same has happened to the "altitude tent", developed by AIS to replicate the effect of altitude training at sea level.
“高原帐篷”也是如此，这是澳大利亚体育学院为了模仿在海平面高度地点的训练效果而设计研发的。
Although the pressure of the cabin is adjusted to prevent altitude sickness, you could still experience sleepiness or a headache.
虽然机舱压力可以被调节，以避免人体发生高空反应，但你仍会感到困倦或头痛。
Kohler attributes the immediate cause of the abandonment to problems with corn production at a high altitude during short growing seasons.
科勒认为，（居住地）废弃的直接原因是高海拔地区的玉米生长季节较短，因此生产出现了问题。
In 1958, Australian scientist David Warren developed a flight-memory recorder that would track basic information like altitude and direction.
1958年，澳大利亚科学家戴维·沃伦开发了一种飞行记录仪，可以追踪飞行高度和飞行方向等基本信息。
In the 1960s and 1970s, most personal and corporate planes were propeller or turbo-prop aircraft, which fly at a lower altitude than jetliners.
在1960和1970年代，大部分个人和企业的飞机是飞行高度低于喷气式飞机的螺旋桨式或涡轮螺旋桨式飞机。
Wind velocity also increases with altitude and may cause serious stress for trees, as is made evident by the deformed shapes at high altitudes.
风速也随着海拔高度的增加而增加，可能给树木带来严重的压力，这从高海拔地区的变形就可以看出来。
What happens at higher altitude?
在高海拔处会发生怎样的情况呢？
What happens at higher altitude?
在高海拔处会发生怎样的情况呢？
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