买卖: buying and selling, business, business transactions...
相比: to compare...
野生: wild, undomesticated...
交流: to exchange, exchange, communication, interaction, to have social contact (with sb)...
途径: way, channel...
楼梯: stair, staircase...
野营: to camp, field lodgings...
吃: to eat...
最终: final, ultimate...
主人公: hero (of a novel or film), main protagonist...
