We're Killing Ourselves, in which he tries to sketch life in the year 2000.
“我们正在自杀”,在这本书中他简述了2000年的生活。
Thus one simple fact, a change in the number of bison, had an effect on the whole wildlife chain of the plains.
因此,出现了这样一个简单的事实--野牛数目换的变化对平原的整个野生生物链都产生了影响。