at sea level

At the same level as the ocean. A lot of people struggle to breathe when not at sea level.

at sea level

at the level of the surface of the ocean. It is easier to breathe at sea level than in the mountains. Boats on the ocean are at sea level, but those on rivers are not.

See also: level, sea

McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.

See also:

level
on the level
raise the stakes
level off
level up
level down
level one’s locks
level (one's) locks
level out
on the level, to be

References in classic literature

Where the road dipped nearly at sea level to cross a small gulch Billy looked for water.

The Valley of the Moon

So is local pressure 30.92 and now it indicates field elevation or is 30.92 the pressure at sea level?

The pressure will be 29.92 inches of mercury at sea level. At an airport 1000 feet above sea level, with less atmosphere above to create the pressure, the pressure will be an inch lower at 28.92.

If you adjusted your altimeter to 29.72, it would read zero at sea level. All is once again, good.

How does that work again?

In a person at sea level, the arterial oxygen partial pressure is 90-95 mmHg; oxygen saturation is 97%.

This is more critical for people who live at sea level. If you are going above 8000 feet, you should not climb more than 1000 feet per day if you suspect you are developing altitude-related symptoms.

High altitude illness: avoiding the perils of the peaks

Whether at sea level, where most people live, or at Everest's peak, Earth's air contains 21 percent oxygen.

At sea level, where air weighs down heavily, living things inhale oxygen-rich air.

Climbers can perform 1/5 the amount of work they do at sea level. And they use 50 percent of their work capacity just to breathe.

Wild Everest: over the top!

5 Hypoxic training is not as fast as training at sea level.

Question: Is the training as good as can be done at sea level? The answer is no.

Altitude training revisited: the physiological factors in altitude training and how they affect human performance

While Abu Dhabi is susceptible to flooding, it is no more vulnerable than other cities around the world located at sea level, such as New York, Holland said.

Cities in region face floods if sea level rises modestly Up to 6%

Lying almost at sea level, parts of this island nation have already suffered a number of storm surges.

Danger on the high seas: Dr Mark Spalding highlights the threat of rising seas -- the potentially devastating and likely impact of a global temperature rise on the world's oceans. (Climate)

Even at just 12,000 feet, he notes, blood-oxygen concentrations dip so low that, if they showed up in a person at sea level, "your HMO or Medicare insurance would pay for you to have supplemental oxygen."

These are people who lived at sea level but then moved to locations 10,000 feet or higher at least a year before the testing.

Breathing on the Edge

词组	at sea level
释义	at sea level at sea level At the same level as the ocean. A lot of people struggle to breathe when not at sea level. See also: level, sea Farlex Dictionary of Idioms. at sea level at the level of the surface of the ocean. It is easier to breathe at sea level than in the mountains. Boats on the ocean are at sea level, but those on rivers are not. See also: level, sea McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. See also: level on the level raise the stakes level off level up level down level one’s locks level (one's) locks level out on the level, to be References in classic literature Where the road dipped nearly at sea level to cross a small gulch Billy looked for water. The Valley of the Moon So is local pressure 30.92 and now it indicates field elevation or is 30.92 the pressure at sea level? The pressure will be 29.92 inches of mercury at sea level. At an airport 1000 feet above sea level, with less atmosphere above to create the pressure, the pressure will be an inch lower at 28.92. If you adjusted your altimeter to 29.72, it would read zero at sea level. All is once again, good. How does that work again? In a person at sea level, the arterial oxygen partial pressure is 90-95 mmHg; oxygen saturation is 97%. This is more critical for people who live at sea level. If you are going above 8000 feet, you should not climb more than 1000 feet per day if you suspect you are developing altitude-related symptoms. High altitude illness: avoiding the perils of the peaks Whether at sea level, where most people live, or at Everest's peak, Earth's air contains 21 percent oxygen. At sea level, where air weighs down heavily, living things inhale oxygen-rich air. Climbers can perform 1/5 the amount of work they do at sea level. And they use 50 percent of their work capacity just to breathe. Wild Everest: over the top! 5 Hypoxic training is not as fast as training at sea level. Question: Is the training as good as can be done at sea level? The answer is no. Altitude training revisited: the physiological factors in altitude training and how they affect human performance While Abu Dhabi is susceptible to flooding, it is no more vulnerable than other cities around the world located at sea level, such as New York, Holland said. Cities in region face floods if sea level rises modestly Up to 6% Lying almost at sea level, parts of this island nation have already suffered a number of storm surges. Danger on the high seas: Dr Mark Spalding highlights the threat of rising seas -- the potentially devastating and likely impact of a global temperature rise on the world's oceans. (Climate) Even at just 12,000 feet, he notes, blood-oxygen concentrations dip so low that, if they showed up in a person at sea level, "your HMO or Medicare insurance would pay for you to have supplemental oxygen." These are people who lived at sea level but then moved to locations 10,000 feet or higher at least a year before the testing. Breathing on the Edge
随便看	tout tout around tout as tout de suite tout for tout for (something) tout (someone or something) as tout suite tow to wake the dead, loud enough toward towards tow away to way of thinking towel towel down toweling towel off towel up tower tower above tower above (someone or something) tower head and shoulders above tower head and shoulders above (someone or something) tower head and shoulders over (someone or something)