backpackers/ˈbæk.pæk.ɚ/名词背包旅行者10 years ago, most visitors to Costa Rica were adventurous backpackers travelling on a budget.10年前,大多数来到哥斯达黎加的游客都是喜欢冒险的背包客,他们通常预算有限。想跟读,去练习