我坐在极小的空间里面，不知不觉睡着了。
最后她不知不觉地睡着了。
他不知不觉地睡着了。
我们经常给孩子哼小夜曲，不知不觉我们也跟着睡着了。
We often sing lullabies to our children that we ourselves may sleep.
夜更深了，兄妹俩累得不知不觉的又睡着了。
Deeper night, brother and sister both tired imperceptibly asleep again.
他每天读书到深夜，有时候不知不觉伏在书案上就睡着了。
Everyday he studied far into the night. Sometimes he fell asleep on the writing desk.
他在不知不觉中睡着了。
时间渐渐过去，不知不觉地天使睡着了，可能。
Time is gradual past, insensibly angel asleep, probably very daytime work too tired.
不知不觉我又睡着了。
终于，有天早上四点左右，我不知不觉的睡着了，睡得很不安宁。
Finally, one morning at around four o'clock, I dropped into a restless slumber.
终于，有天早上四点左右，我不知不觉的睡着了，睡得很不安宁。
Finally, one morning at around four o'clock, I dropped into a restless slumber.
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