In children, for example, enlarged tonsils in the throat can interfere with breathing as they sleep.

例如在儿童中，扁桃体肿大会在儿童睡眠时阻碍他们的呼吸。

youdao

Their nightstands hold two or three photographs of their father, and I sometimes find them clutching one in a small hand as they sleep.

他们的床头柜上摆着两三张他们父亲的照片，有时我还能看到他们用小手握着一张照片睡着了。

youdao

As the human study suggests, another reason for dolphins keeping their eyes open during sleep is that they can look out for predators while asleep.

正如人类研究表明的那样，海豚在睡觉时睁着眼睛的另一个原因是，它们可以在睡觉时留意捕食者。

youdao

And if they do not have a traditional coffin to sleep in during the day, they can find other answers, such as using a car.

VOA: special.2010.01.20

Russian missiles targeted at American children as they sleep in their beds.

CENTERFORSECURITYPOLICY: ��Stay on Alert��

The researchers now want to look at deeper sleep, where the most vivid dreams are thought to occur, as well as see whether brain scans can help them to reveal the emotions, smells, colours and actions that people experience as they sleep.

BBC: Scientists 'read dreams' using brain scans

The two elephants have been suffering from tuberculosis, and the city authorities have insisted that they should be put to sleep as they pose a threat to other animals in the zoo and its visitors.

FORBES: Connect