The most visible effect is glaciers retreating, year after year mission after mission.

年复一年的飞行任务，看到最明显的变化就是冰川融化。

" Those histories are at risk as the earth warms and the glaciers retreat" .

" 随着地球变暖和冰川退缩，这些历史正面临危险。"

Special signs mark the glacier's retreat, showing where the ice once stood.

特殊的迹象表明冰川消退，显示了冰川曾经存在的位置。

And since then, the glaciers retreated.

从那时起，冰川就消退了。

Rather than glaciers retreating, you have glaciers advancing.

冰川不是后退，而是前进。

When the glaciers retreated, some descendants of the Fournol continued living in Iberia.

当冰川消退后，福诺尔人的一些后裔继续生活在伊比利亚半岛。

But when climates warm or there’s less snow, glaciers retreat and grow smaller.

但是当气候变暖或降雪量减少时， 冰川会退缩并变小。