However, as sea levels rose, erosion reshaped the coast.

然而，随着海平面上升，海岸被侵蚀。

Plunging to nearly 15,000 feet below sea level is a journey into a mysterious abyss, a journey few humans can even comprehend.

几近低于海平面15000英尺下已经是一次前往神秘深渊的旅行，甚至罕有人类可以理解其中的意义。

In fact, most of the Siwa oases lies at roughly 19 metres below sea level.

实际上，锡瓦绿洲大部分低于海平面约19米。

Now, to drop even a single bomb, the U.S. Armed Forces have assets at every elevation, from sea level to the edge of space.

现在，哪怕是只扔一枚炸弹，美国空军储备了全方位的武器，从海平面到太空边缘。

This is the abnormal rise in sea levels as a hurricane blows water ashore.

当飓风临近海岸时，海平面会升高。

Unlike floating ice shelves which have little impact on sea level when they break up, the ice sheet is anchored to bedrock will blow the sea surface. Surrounded by open ocean, it is also vulnerable.

不同于浮动冰架，崩裂时几乎不对海平面造任何影响。当与基岩相连的大冰块分崩离析时，将会撞击覆盖海面的冰原。由于冰原的四周都被海洋包围，所以十分脆弱。

The tunnel would be well-ventilated if tall chimneys were built above sea level.

如果再建些伸出海面的高大的烟囱状通风管，隧道就具备了良好的通风条件。

It's over 1,000 feet below sea level.

它在海平面以下1000英尺。

80 feet below sea level in an impenetrable gold vault.

海平面下24米处一个坚不可摧的金库里。

This farm, with its verdant vistas and a trickling waterfall, seems far removed from the rising sea levels, blistering heat and destructive storms that characterize climate change.

放眼望去，脚下的农场一片葱，有涓涓瀑布，似乎与海平面上升、酷热以及破坏性风暴等气候变化的特征相去甚远。

Her important new research shows that rising sea levels are devastating areas of Southern Louisiana more dramatically than anyone expected.

她的研究表明，海平面的上升给路易斯安纳州南部地区造的破坏远超人们的预期。

They are living through extreme weather events and rising sea levels.

他们生活在极端天气和海平面上升的威胁之中。

The move is due to global warming and rising sea levels.

此次搬迁是由全球变暖和海平面上升所致。

The hospital's water impermeable AquaFence is engineered to withstand a storm surge up to 15 feet above sea level.

医院的防水层设计可以抵御海平面15英尺以上的风暴潮。

Just a third of what you would find at sea level, and this year we're talking about at least nine deaths happening during this climbing season which is really only a few weeks long.

只有海平面的三分之一，今我们讨论的是至少有9人在这个仅有几周时间的登山季节死亡。

What is the Earth's longest mountain chain above sea level?

地球上海拔最高的山脉是什么？

So they built the drainage channels too close to sea level, and now sea levels are rising, they're more or less useless.

所以他们建造的排水水渠离海平面太近了，现在海平面在上升，他们或多或少地失去了作用。

Down here, the pressure has risen to more than 200 billion times the pressure at sea level on Earth, pressing the surrounding atoms so closely together that it's about ten times denser than iron.

在这里，压力已经上升到地球海平面压力的 2000 亿倍以上，将周围的原子紧密地压在一起，其密度大约是铁的十倍。

Within this general field, surveying changes in the volume and stability of the ice-cap is vital, since these may have profound effects on world sea levels and on ocean currents.

在这项领域里，调查冰盖的体积和稳定性是至关重要的，因为它们可能对世界范围内的海平面和洋流产生深远影响。

This is coming under threat now with rising sea levels and global warming.

由于海平面的不断升高以及全球变暖，我们都在遭受着洪水的威胁。