- At last, the sea floor.
最终来到海床上 - Over two miles down,
离海平面2英里 - the pressure here is three hundred times that at the surface.
压强是地面的300倍 - It takes several months for marine snow to drift down as far as this.
海雪落到这里也要好几个月的时间 - As you travel away from the rocky margins of the continents an immense plain stretches ahead.
当你越过满是岩石的海底陆地边缘 前面便是广阔的海底平原 - It extends for thousands of miles
绵延几千英里 - gradually sinking downwards.
逐渐向下蔓延
It takes several months for marine snow to drift down as far as this. 海雪落到这里也要好几个月的时间
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