Their wakeful sentinel had descried danger, and this was his warning.

他们那警觉的岗哨发现有危险情况，发出警报。

The light emitted by your devices releases wakeful chemicals in your brain.

设备的屏幕光会在大脑中释放出让人清醒的化学物质。

In addition to wakeful rest, sleep is also important for learning.

除了清醒状态下的休息，睡眠对学习也很重要。

If you want to give " wakeful rest" a try, here are a few simple things to do.

如果你想尝试" 醒着休息" ，这里有一些简单的事情可以做。

" Wakeful resting led to higher overall recollection in both age groups, " the researchers noted.

" 在这两个年龄组中，清醒状态下休息引发了更高水平的整体记忆力。" 。

" A period of wakeful rest immediately after new learning boosts free recall of verbal material, " the researchers wrote.

" 进行新的学习后，保持清醒的休息一段时间，可以促进对语言材料的自由回忆。"

While REM sleep is considered a light or wakeful state, it's also the stage where you're most likely to dream.

虽然快速眼动睡眠被认为是浅眠或易醒状态，但也是在这个阶段，人最有可能做梦。

Try to get some " wakeful rest" after a study session. Then try to get a good night's sleep.

试着学习后，在" 清醒状态下休息会" ，然后好好睡上一晚。

Stephen sometimes slept; Elfride alone was wakeful and palpitating hour after hour.

史蒂芬有时会睡觉；一个小时又一个小时，只有埃尔夫莱德一个人醒着，心跳加速。

After that, we feel more wakeful and ready to go about our lives.

在那之后，我们会感到更加清醒，并准备好开始我们的生活。