forced up a huge dome of rock 500 miles wide, 形成了绵延500英里的巨大石丘

20. 70 million years ago
    7000万年前
21. this land was just as flat and as deep as the Danakil Depression.
    这片土地像达纳吉尔凹地一样平坦深陷
22. Molten lava rising from the earth's core
    熔岩从地核中漫涌上来
23. forced up a huge dome of rock 500 miles wide,
    形成了绵延500英里的巨大石丘
24. the roof of Africa.
    这就是非洲屋脊
25. Over millennia, rain and ice carved the rock into a landscape of spires and canyons.
    千万年后 雨水和冰川 已将岩石雕琢成尖峰与峡谷
26. These summits, nearly 3 miles up,
    这些将近3英里高的山峰顶上

来自《行星地球 第一季 第二集 Planet Earth S01E02 山地》第 23 行