He tells me is a city boy, and this is his first time to live in a camp like this.
他说他是一个都市男孩,这是他第一次过这种野营生活。
Some years ago an American psychiatrist named William Dement published experiments dealing with the recording of eye-movements during sleep.
前些年,美国一位精神病学者发表了一篇报告,报告中记录了眼球在睡眠时的活动情况。