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

18. a lake of lava that has been molten for over a hundred years.
    岩浆湖在此沸腾了100多年
19. These same volcanic forces also created Ethiopia's highlands.
    这些相同的火山作用 也造就了埃塞俄比亚高原
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

来自《行星地球 第一季 第二集 Planet Earth S01E02 山地》第 21 行