That's when people's bodies tend to succumb to altitude sickness.

这时人们的身体往往会屈服于高山症。

And if you get low on oxygen, you may suffer altitude sickness.

如果缺氧，会出现高原反应。

Most of those who died are believed to have suffered from altitude sickness.

大多数死者被认为患有高山病。

Most people do it only two days because altitude sickness can be a problem.

受高空病的影响，大多数人只花两天时间攀登富士山。

So, when they're up there, they don't realize that they're suffering from altitude sickness.

那么，登山的时候，他们就不会意识到自己其实已经出现了高原反应。

Traveling to a high point too quickly can cause altitude sickness which includes headaches, dizziness and nausea.

前往高点太快可能会导致高原反应，包括头痛、头晕和恶心。

It's about 5,000 metres above sea level, way above the point at which altitude sickness starts to affect humans.

海拔5千公尺左右以上就是引发高山症的临界点，这对人类开始产生影响。

Although the pressure of the cabin is adjusted to prevent altitude sickness, you could still experience sleepiness or a headache.

虽然为了防止高空不适，机舱内的气压已经经过了调整，但你仍然会感到困倦或头疼。

In summer, you may have lower risk of altitude sickness because the air has a higher oxygen content than in other seasons.

夏天游玩出现高原反应的风险较低，因为空气中的氧气含量高于其他季节。

They battled extreme weather conditions, altitude sickness, and physical exhaustion, but they never gave up.

他们与极端天气条件、高原反应和身体疲惫作斗争，但他们从未放弃。

And if you ascend to altitudes above 2,500 meters, the resulting oxygen deprivation can cause a form of altitude sickness known as AMS, often causing headaches, fatigue and nausea.

当你爬升到 2500 米以上的海拔时，随之而来的缺氧会造成一种高海拔疾病，即 “AMS” （急性高山症），通常表现为头疼、疲乏、恶心。

The risk of altitude sickness and hypothermia has been increased by a trend called bullet climbing, where hikers begin their ascent at night, pushing on until dawn, according to the Yamanashi tourism board.

一种名为 " 子弹式登山 " 的方法增加了高原反应和体温过低的风险，子弹攀登是指徒步旅行者在夜间开始攀登，一直坚持到黎明，这是山梨县旅游局给出的信息。

When people don't get enough oxygen, they often begin to gasp for air. They may also feel dizzy and light-headed. Besides these symptoms of altitude sickness, others such as headache and fatigue may also occur.

当人们没有足够的氧气时，他们经常会变得气喘吁吁，或头晕目眩。除了这些高原病反应外，头痛、疲劳的状况也可能发生。

Avalanches kill people. Injuries kill people from falling, or from collapses, also weather from exposure, and, of course, just altitude sickness alone is killing people up there because of the height of Mount Everest.

雪崩会造成登山者死亡。从高处跌落会造成伤亡, 而寒冷的天气, 当然, 由于珠穆朗玛峰的高度，仅仅是高原反应也能置人于死地。

Injuries kill people from falling, or from ISIS collapses, also weather from exposure, and, of course, just altitude sickness alone is killing people up there because of the height of Mount Everest.

人们因坠落或 ISIS 倒塌而受伤，也因暴露在天气中而丧生，当然，由于珠穆朗玛峰的高度，仅高原反应就杀死了那里的人。