The Native Americans caught and trained them and were then able to use them to carry their goods when they travelled from one camping ground to another.
美洲土著人捕捉野马,加以驯服。
Fred realized that he had discovered an interesting and enjoyable way of making money.
弗雷德认识到,他已找到了一种既有趣又愉快的挣钱方法。
In order to tell the bees apart, he painted some bees with little spots of colour.