He tells me is a city boy, and this is his first time to live in a camp like this.
他說他是一個都市男孩,這是他第一次過這種野營生活。
Those planning a trip to remote areas, or intending to live in countries where drinking water is not readily available, should know about the various possible methods for making water safe.
那些計劃去偏遠地區旅行,或在飲用水不現成的國家居住的人,應該知道如何使水適于飲用的各種辦法。