这意味着现在居住在海拔3.3英尺的一亿四千五百万人需要在2100年前撤离。
The 145 million people living within 3.3 feet of present sea level have time to move before 2100.
然而，从8000年前开始，湖水急剧地下降，从海拔570米(1870英尺)到320米(1050英尺)。
Starting about 8, 000 years ago, however, the lake level dropped dramatically, falling from 570 meters (1, 870 feet) to about 320 meters (1, 050 feet) above sea level.
三天前浮标表明了这个小小板块海拔的突然变化，但是为什么这里出现突然的加深？
Just three days earlier buoy showed a rapid rise in the sea floor on this little platelet but now the depth is plunging! What's going on here?
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