Under normal circumstances, adenosine triggers these receptors and it produces a feeling of relaxation and even drowsiness for some people.

在正常情况下，腺苷会触发这些受体，让一些人产生放松甚至困倦的感觉。

Thousands of people are tracking the movements of a sleepy black bear who seems reluctant to leave the tree hallow it used as a den this winter.

成千上万的人正在追踪一只困倦黑熊的行踪，这只熊似乎不愿离开今年冬天用作巢穴的树。

As soon as someone says, let me tell you about a time when this happened to me, even the sleepiest audience member will start listening.

只要有人说，让我告诉你这件事发生在我身上的时候，即使是最困倦的观众也会开始听。

As the sleepy part of your brain fight with the awake and moving parts of your brain, the battle can spontaneously tip back in favor of the motor control side and suddenly you're like… WHOA, I'm awake.

当你大脑困倦的区域与你大脑醒着的、活动着的区域斗争时，战斗会自然而然地趋于向运动控制的那一边，突然你… … ，我醒了。

The call of the wild is also the call of the sleepy.

野的呼也是困倦者的呼。

Everyone takes something different or does something different to give themselves energy when they're sleepy.

每个人在困倦时会采取不同的方式或做不同的事情来给自己补充能量。

They took 38 sleepy adult participants, split them up into two groups, one not allowed to use their phones 30 minutes before bed, and another given an UNLIMITED amount of phone time right before night night.

他们邀请了 38 位困倦的成年人参加实验，并将他们分成两组。一组是在睡前 30 分钟不允许使用手机，另一组是在睡前不限制玩手机的时间。

Alright, so as a quick recap, insomnia is an inability to get restorative sleep that causes daytime sleepiness and fatigue, and can be managed with good sleep hygiene, stimulus control, behavior therapy, and occasionally short courses of medications.

得！快速回顾一下：失眠是指无法获得让人恢复精力的睡眠，且会导致白天的困倦以及疲惫，可以用形成良好的睡眠保健与卫生习惯、控制刺激源、行为疗法，以及偶尔使用短期的药物治疗来应对改善。

However, caffeine has a similar molecular structure to adenosine and, like a car cutting the queue at a drive-through, it binds to the neurons before the adenosine gets the chance, preventing these feelings of drowsiness.

然而，咖啡因的分子结构与腺苷相似，一辆车在得来速通道插队一样，它会在腺苷之前与神经元结合，阻止困倦感的产生。

She could hardly remain in bed and look languid and make croaking noises until Aunt Pitty, Mammy and Uncle Peter were out of the house and on their way to Mrs. Bonnell's.

她在床上几乎躺不住了，也没法再装出困倦的样子和发出抱怨的叫声，一心等待皮蒂姑妈，嬷嬷和彼得大叔出门到邦内太太家去。

The scientists tested 38 people in their research. The people answered questionnaires about their sleeping pattern and when they felt tired during the day.

在研究，科学家们对38人进行测试。参试者回答了关于他们睡眠模式以及白天何时感觉困倦的调查问卷。

But if your body's snoozing impulse is continually keeping you from enjoying a good book, there are some tricks to thwart it.

但如果你身体的困倦冲动不断让你无法享受一本好书，有一些技巧可以阻止这种情况。

The cameras make sure a driver is watching the road, and they look for signs of sleepiness or impairment.

红外摄头可以确保司机驾车时在看路，也可以监测到司机困倦或身体受损的迹象。

The phone's artificial daylight, aka blue light, suppresses the production of melatonin, disrupting our feelings of sleepiness.

手机的人造日光，也是蓝光，会抑制褪黑素的产生，扰乱我们的困倦感。

As a result, they're always sleeping less than required and operating in a more drowsy state.

因此，他们的睡眠时间总是比要求的少，并且处于更困倦的状态。

By the time we had finished the first bottle, Simon was very sleepy and very drunk.

当我们喝完第一瓶酒时，西蒙非常困倦，醉醺醺的。

And I love that word sleepy there.

我喜欢那里的“困倦”这个词。

And now, let's go to Sonia with today's keywords.

Julie 说她今天真的好困。 I'm so sleepy today。形容词 sleepy 是困倦的。 她想要出去稍微走一走，帮助提神。 I'd like to take a quick walk outside。形容词 quick 是短暂的、快速的。 Sam 也赞成她的想法， 因为运动能够提高人的精力程度。

We hope that you found some tips on how you can stay awake when you feel sleepy.

我们希望你找到了一些关于如何在你感到困倦时保持清醒的小贴士。

And after an orchestrated climb in the bed, sleepy folks can catch some Zs.

在经过精心安排的床上爬行之后，困倦的人们可以捕捉到一些 Zs。