Ridges on the ocean floor form the longest continuous ranges of mountains on the planet, but only in a very few places on the Earth do these mountains rise above the ocean surface.

洋底上的海脊形成了地球上最长的绵绵山脉，但这些山脉只有在很少的几个地方才上升到海面以上。

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Scientists believe strong earthquakes forced the bottom of the sea to rise above the water. After millions of years, it was pushed up into the air to form land and mountains.

科学家们认为是强烈的地震，使得这一地区的海底向上隆起，出了水面，经过数百万年的演变，它越来越高，形成了陆地和山脉。

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In general, mountains only rise to around 1, 500m above their snow lines, so it is the altitude of these lines - which depends on climate and latitude - which ultimately decides their height.

一般来说，山峰在雪线之上的高度只能达到1500米左右，因此，正是这些雪线的海拔高度才最终决定了山峰的高度，而雪线的海拔高度又取决于气候和纬度。

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