We're probably at an elevation of about 13,000 feet above sea level.

我们很可能在海拔13000英尺的高度。

《柯林斯英汉双解大词典》

It is building its second ice-breaking ship and setting up research drilling operations on an ice dome 13,422 feet above sea level that is one of the planet's coldest places.

它正在建造第二艘破冰船，并在地球上最冷的其中一个地方——海拔13422英尺的冰穹上进行研究钻井作业。

youdao

In reality, sea level varies according to the irregular interior of the planet.

事实上，海平面会根据地球不规则的内部而变化。

youdao

It ends at the Dead Sea, the lowest point on Earth, four hundred meters below the level of the Mediterranean Sea.

VOA: special.2009.05.18

Far below sea level, they contain some of the harshest environments on Earth, with no oxygen and no light.

VOA: special.2010.11.10

When the city was founded about one thousand six hundred years ago, the level of the Adriatic Sea was almost two meters lower than it is today.

VOA: special.2009.04.22

The south-east corner of Britain is gently subsiding while the sea is rising, as it warms, so the relative level of the sea is increasing.

BBC: Legacy of Britain's great flood

These include the international seismic monitoring network, the international array of sea level measuring stations (the Global Sea Level Observing System, the Global Telecommunication System of the World Meteorological Organization and associated public geostationary satellites) and the internet.

UNESCO: & CTBTO: Working together to issue timely alerts

An approaching hurricane can actually raise the level of the sea and pull it right up and over the coastline.

CNN: Hurricanes -- slow, methodical, deadly