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。