I go to sleep alone, and wake up alone.

独自入眠，独自醒来。

youdao

They may be afraid to sleep alone at night, with the light off, to sleep in their own room, or have nightmares or bad dreams.

他们可能害怕晚上一个人睡、关灯睡觉、在自己房间睡，或者会做噩梦。

youdao

Although previous research has suggested that sleep alone can help consolidate memories, this study is the first to show that sound cues can strengthen specific spatial memories.

尽管之前的研究已提示睡眠本身就可加强记忆，但这项研究首次揭示了声音也能增强特定的空间记忆。

youdao

And they will study whether it is involving in controlling sleep quantity alone, or also what scientists call the "wakefulness-behavioral drive."

VOA: special.2009.08.26

He was alone, fighting against sleep.

VOA: special.2009.03.18

When Woodside, California, mom Dana Sanderson asked her daughter Kit, then 6, what would help her sleep alone, Kit decided she needed a bigger night-light and a "Mommy pillow, " a body pillow with her mom's image traced in fabric paint.

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Tonight, somewhere in America, a young person, let's say a young man, will struggle to fall to sleep, wrestling alone with a secret he's held as long as he can remember.

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Propping her limp body into a sitting position, they began poking, prodding, and speaking to her sharply while she, with eyes rolling wildly in fear and confusion, angrily flailed at them trying to get them to leave her alone so she could go back to sleep.

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