the moment when you wake

For a moment, between waking and sleeping, he couldn't understand where he was. 在半睡半醒之间，他一时不清楚自己身处何处。

used to refer to a period of time or an experience during which you are awake

Children are in school for 15 percent of their waking hours/life between birth and the age of 16. 儿童从出生到16岁，不睡觉时有15%的时间在上学。

She seems to spend every waking moment/minute/hour (= all her available time) at the piano. 她似乎把除睡觉以外的所有时间都花在钢琴上了。