One autumn day in 2009, the price of gold topped $1,000 an ounce.
원문출처 : http://www.cnn.com/2017/11/10/world/wonder-list-bill-weir-peru-amazon-illegal-gold-mining/index.html
원문출처 : http://www.cnn.com/2017/11/10/world/wonder-list-bill-weir-peru-amazon-illegal-gold-mining/index.html