我们也安排了观察员保证它们不会袭击猎人。
We have observers who ensure there are no attacks on hunters.
这个数据可以回溯到对洞穴绘画的研究，人们观察猎人们用哪只手拿武器，以及考古学上对文物的分析。
And this goes back to studies of cave paintings, looking at which hands hunters are using to hold their spears, and to archaeological analyses of ancient artifacts.
在这些证明这个想法已经获得成功的试验中，值得一提的是刚果共和国的猎人和其他利用森林的人们组成的观察网络。
Among the trials that have already proved the success of the idea is a network of hunters and other locals who use the forests of the Republic of Congo.
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