狩猎采集生活也有一些不利之处。
There were a few disadvantages to the hunter-gatherer lifestyle.
当然地球无法支持100亿个过狩猎采集生活的人，因为他们人均需要的土地比现代依靠农业养活的人要多得多。
The earth could certainly not support 10 billion hunter-gatherers, who used much more land per head than modern farm-fed people do.
在亚马逊流域，有无数的狩猎采集者，他们生活在世界上最大的沿河生长的树木的枝干上。
There are numberless hunter-gatherers in Amazonia, living along branches of the world's largest river tree.
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