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

然而，随着海平面上升，海岸被侵蚀。

The sea level will rise as well.

海平面上升。

Rising sea levels do not just threaten Tuvalu.

海平面上升不仅威胁图瓦卢。

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

它在海平面以下1000英尺。

This causes the level of the oceans to rise.

这海平面上升。

But the sea level isn't just rising.

但海平面不仅在上升。

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。

Melting ice caps and rising sea levels.

融化的冰海平面升高。

And all that meltwater means rising seas.

而所有这些使得海平面上升。

Making the problem worse is rising sea level.

海平面上升使问题变得更糟。

Climate change means sea levels are rising.

气候变化引起海平面上升。

But, measuring sea levels shows the water raises an average of five and a half millimetres each year.

但是，测量海平面显示，海平面平均每年上升5.5毫米。

It's over a hundred metres below the level of the sea.

它的地势低于海平面100多米。

All around the world, sea levels are rising.

全世界的海平面都在上升。

Its coastal areas are threatened by rising sea levels.

其沿海地区受到海平面上升的威胁。

That would be a 3-foot increase worldwide.

这将提升海平面差不多3英尺。

When the Earth spins on its axis, ocean levels stay the same.

当地球自转时，海平面保持不变。

Rising sea levels have made the threat of flooding even worse.

海平面上升使洪灾的威胁更加严重。

Now, that's just outside, at sea level.

那就在外面，在海平面上。

It would mean that Antarctica is not contributing to seal level rise.

这意味着南极不会海平面上升。