大学英语： Endless 无穷无尽的

　　1. Endless 无穷无尽的

　　2. Persons have been said/reported/known to do sth. 据说人们曾经做过…

　　3. Lost boy 迷路的小男孩

　　4. Sleepwalking(动名词作主语) is a scientific reality.

　　5. What(主语从句中缺少主语指事用waht) is certain about sleepwalking is that it is a symptom of emotional disturbance.

　　6. Doctors say that sleepwalking is much more(common的比较级是more common，much放在比较级前用来强调) common than is generally supposed.医生说梦游要比原来人们认为的更为普通。

　　7. Publicized 出版的

　　8. 形容词或副词+enough to do sth. 到了某种程度以至于做某事