We have modern patterns of climate, vegetation and fauna, so the climate conditions were somewhat similar to today.
那时有现在的气候模式,植被和动物群,因此气候条件在某种程度上和现在差不多
By 1852-53,Boston and New York think about this--Boston-- although we're getting close to that again Boston and New York had 50% foreign-born populations.
在1852年到1853年间,波士顿和纽约,你们听听这个数据,虽然我们现在又快接近这个比例了,那时移民占据波士顿和纽约人口的50%
So this was definitely in a different generation.
所以那时肯定是个,和现在完全不同的年代。
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