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Their day ends as it began, safe on the steep cliffs.
這一天結束了，和開始時一樣，它們又坐在了陡峭而安全的懸崖上
The Ethiopian volcanoes are dormant but elsewhere, others still rage.
埃塞俄比亞的火山正處于休眠期，可是其它地方的火山仍在怒吼
Volcanoes form the backbone of the longest mountain chain on our planet, the Andes of South America.
火山構成了地球上最長山系的主干，南美洲的安第斯山脈
This vast range stretches 5,000 miles from the equator down to the Antarctic.
這座巨大的山脈從赤道向南極綿亙5000英里
It formed as the floor of the Pacific Ocean slid beneath the South American continent, buckling its edge.
它的形成是由于太平洋板塊俯沖到南美洲板塊之下，造成它的邊緣隆起
At the southern end stand the mountains of Patagonia. It's high summer.
最南端矗立著巴塔哥尼亞山脈。現在是盛夏時節
But the Andes have the most unstable mountain weather on the planet and storms can erupt without warning.
可是安第斯山的天氣是全球山區氣候中最不穩定的，暴風雪會在毫無征兆的情況下來襲
Temperatures plummet and guanacos and their newborn young must suddenly endure a blizzard.
氣溫直線下降，羊駝和它們新生的幼仔只好忍受突如其來的風雪
Truly, all seasons in one day.
可以說是在一天之中度過了四季。
