That could explain why our sleep-deprived selves are so cognitively challenged: We are, if not precisely half-asleep, partially asleep.

这解释了为什么我们缺少睡眠时，认知能力会下降：这时的我们即使不是半睡状态，也是部分睡眠。

youdao

I'm already good at falling asleep fast (within a few minutes), and I often have dreams during 15-20 minute naps, so I wonder if I've partially conditioned myself to enter REM rapidly.

现在我能够快速地进入睡眠状态(几分钟的时间)，并且在15 - 20分钟的小睡中经常做梦。不知道是不是说明我早就开始调节自己快速进入REM。

youdao