Between 1850 and 1910 the bison population is thought to have fallen from 60 million to just a few hundred.
人们认为,在1850年到1910年之间,野牛的头数从6,000万头降到只有几百头了。
Finally, trust your own ideas and your own thinking! It is your own life, so find something that you enjoy doing.
最后相信你自己的看法和想法!这是你自己的生活,因此,找你喜欢做的事情来做。