Somnambulism is walking around while you are asleep.

Somnambulism is walking around while you are asleepSomnambulism就是睡著的時候到處走動。

Note carefully: this word is the CONDITION or the ACTIVITY, not the person — the person is a somnambulist.

Note carefully請注意： this word is the CONDITION or the ACTIVITY這個字指的是「狀態」或「行為」本身， not the person而不是那個人—— the person is a somnambulist那個人叫做somnambulist。

It is a formal, medical-sounding word. A doctor writing notes may use it; a sleep clinic may use it; your friend will just say sleepwalking. Both are correct English, but sleepwalking is what people actually say, and somnambulism is what appears in a textbook, a news article trying to sound serious, or an old horror story.

It is a formal, medical-sounding word它是一個聽起來正式、醫學感的詞。 A doctor writing notes可能寫病歷的醫生 may use it會用它； a sleep clinic睡眠門診 may use it也會用它； your friend你朋友 will just say sleepwalking就只會說sleepwalking。 Both are correct English兩個都是正確的英文， but sleepwalking is what people actually say但sleepwalking才是大家真正會說的， and somnambulism is what appears in a textbook而somnambulism會出現在教科書裡、 a news article trying to sound serious想聽起來嚴肅的新聞報導裡、 or an old horror story或是舊式的恐怖故事裡。

The real thing it describes: the person gets up, eyes often open, may walk, open doors, get dressed, even eat, and afterwards remembers nothing.

The real thing it describes它實際描述的情況是： the person gets up這個人會起身， eyes often open眼睛常常是張開的， may walk, open doors, get dressed, even eat可能會走動、開門、穿衣服、甚至吃東西， and afterwards remembers nothing事後完全不記得。

It is most common in children and usually stops as they grow up.

It is most common in children它在小孩身上最常見， and usually stops as they grow up通常隨著長大就會停止。

Films show sleepwalkers with arms straight out in front — that is a joke from old cartoons, not real.

Films show sleepwalkers with arms straight out in front電影裡常演夢遊的人雙手直直往前伸—— that is a joke from old cartoons, not real那其實是舊卡通的玩笑畫面，不是真的。

One thing to know: waking a sleepwalker is not dangerous, though they may be confused and frightened; the safer thing is to guide them gently back to bed.

One thing to know有一件事要知道： waking a sleepwalker is not dangerous叫醒夢遊中的人並不危險， though they may be confused and frightened雖然他們可能會迷糊、害怕； the safer thing更安全的做法 is to guide them gently back to bed是輕輕引導他們回到床上。