Stages one and two are light sleep.

第一和第二阶段为浅眠期。

To snooze means to have a short light sleep.

打盹的意思是短暂的浅睡眠。

Next, your body enters stage two, also known as light sleep.

然后，身体进入第二阶段，也叫浅睡期。

Dreams are complicated, but one thing we know is that vivid dreams seem to be tied to light sleep.

梦是复杂的，但有一点我们知道，生动的梦似乎与浅睡眠有关。

Arousal test: A high-frequency narrow-band noise is presented for 2 seconds to the infant when he is in light sleep.

当婴儿处于浅睡眠状态时，向婴儿呈现两秒的高频窄带噪音。

The first stage is a very light sleep in which your body is just beginning to settle down and unwind.

第一个阶段叫极浅睡期，这个阶段你刚躺下，全身开始放松。

Researchers think this could be because nappers are able to stay in a lighter sleep and move through sleep stages more easily.

研究人员认为，这可能是因为小睡者能够保持较浅的睡眠，更容易度过睡眠阶段。

This lasts less than 10 minutes and is considered a light sleep.

这持续不到 10 分钟，被视为浅睡眠。

In other words, you are consistently waking up during periods of light sleep because you need healthier ways to manage your stress.

换句话说，你总是在浅睡眠期醒来，因为你需要更健康的方式来管理压力。

Stage 2 is still considered light sleep, although it’s a deeper state than stage 1.

第 2 阶段仍然被认为是浅睡眠， 尽管它比第 1 阶段更深。

As your body temperature drops and your breathing slows down even more, you enter light sleep.

当你的体温下降并且你的呼吸更加缓慢时，你会进入浅睡眠。

After experiencing your first and second periods of deep sleep, your body enters wakeful sleep stages, like REM sleep or light sleep, which makes you vulnerable to common sleep disruptions.

经历了第一和第二个深度睡眠期后，身体进入到了清醒的睡眠阶段，比如说快速眼动睡眠或浅睡眠，这会让你易受到常见的睡眠干扰的影响。

At night, too many layers were considered sissy, so Hiccup generally lay awake for a couple of hours until he had shivered himself into a light sleep.

到了晚上，层层太多被认为是娘娘腔，所以卡嗝通常会醒着躺上几个小时，直到他颤抖着进入淡淡的睡眠。

He was that Monster mentioned earlier in this story, the great Beast who had been sleeping off his Roman picnic for the past six centuries or so, the one who had recently been drifting into a lighter sleep.

他就是这个故事前面提到的那个怪物，在过去的六个世纪左右的时间里，他一直在罗马野餐中睡大觉，而最近却睡得更香了。" 他就是这个故事前面提到的那个怪物，他在过去的六个世纪里一直在罗马野餐中睡觉，最近睡得更香。

I think I may have dropped off into a light sleep, but my senses were still awake, and I was suddenly startled into intense consciousness by a hurried, angry sound, the most awe-inspiring sound anyone can hear, the death rattle.

我想我可能已经睡得很轻，但我的感官仍然清醒，我突然被一种急促、愤怒的声音惊醒，这是任何人都能听到的最令人敬畏的声音，死亡的嘎嘎声。