That is the lowest point on the earth's land surface so this dramatic drop in just a very short geographical area.
这是地球陆地表面的最低点,这急剧下降是在很短的地理范围内。
But it grows pretty rapidly, as n goes up, and I'm going to show you an example in a second.
解决问题需要的时间会急剧增长,一会儿我会让大家看个例子的,我想大家注意的还是。
Then what happens is the population grows, and for this the archaeological evidence is very strong.
然后你会发现人口在急剧的增长,有很多考古证据都可以有力的证实这一点
And these upheavals are leading to mass migrations, migrations of people.
这些急剧兴盛带来了大移民,人口的大迁徙。
Now, look how suddenly and sharply it's correcting downward.
看它现在回调的多么突然和急剧
It dropped dramatically in the period from 1954-- this is these filled black bars refer to this axis, polio cases per 100,000 population dropped down to only three or four cases by 1956.
患病率在一九五四年后的,一段时间里急剧下降,该坐标轴上的这些黑色柱形图表明,到一九五六年,小儿麻痹症的发病率,已经降低至每十万人中仅三到四人发病
And it expands the number of officials dramatically.
如此一来,官员的数目急剧增加
Now the two things to notice about this are the high spike that you have out here which occurs very rapidly and then the rapid decline in blood sugar, and insulin is involved in this whole reaction.
有两个需要注意的事情是,你们在这看到的急剧变化的曲线代表着,迅速上升和迅速下降的血糖,另外胰岛素也随之发生变化
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