wakeful

1. ADJ Someone who is wakeful finds it difficult to get to sleep and wakes up very often when they should be sleeping. 失眠的

2. wakefulnessN-UNCOUNT

It is never a good idea to take sleeping pills regularly for this kind of wakefulness. 對付這種失眠，經(jīng)常喫安眠葯絕不是什麼好辦法。