altitude是什么意思？

In 1958, Australian scientist David Warren developed a flight-memory recorder that would track basic information like altitude and direction.

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

Besides the airport crowds and stress, travelling at a high altitude has real effects on the body.

The lower oxygen pressure found in an aircraft cabin is equivalent to that at 6, 000-8, 000 feet of altitude.

One of the most common dangers to climbers is altitude sickness, which can affect even very experienced climbers.

Altitude sickness usually begins when a climber goes above 8000 or 9000 feet

Besides these symptoms of altitude sickness, others such as headache and fatigue may also occur.

A few precautions can help most climbers avoid altitude sickness

You body needs to get used to a high altitude before you climb to an even higher one.