I had a guilty conscience and could not sleep.

我问心有愧，睡不着觉。

《牛津词典》

Clara could not sleep quite yet, it was too wonderful to see the stars from her bed.

克拉拉还不能完全入睡，从她的床上看星星太美妙了。

youdao

I could not sleep that night.

那天晚上，我睡不着。

youdao

My body seemed on fire and I could not sleep.

我全身如火般滚烫,无从休息。

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Whatever their devotion to poverty, they could not sleep on the ground in winter when they were in Germany.

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"I was so stressed out, I could not sleep at night, " he says.

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"I could not sleep the night we got the election results, " he confesses.

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