Along the hundreds of kilometers of waterways my field assistant and I surveyed in Colombia, Peru and Brazil, we encountered only a few dozen sizable outcrops.
Along the hundreds of kilometers of waterways my field assistant and I surveyed in Colombia, Peru and Brazil, we encountered only a few dozen sizable outcrops.
尽管我和我的田野助理，在哥伦比亚、秘鲁和巴西等国跋涉了数百公里的水道，但是仅找到少数几个够大的露头。