I go to sleep alone, and wake up alone.

独自入眠，独自醒来。

youdao

Sleep alone.

一个人睡。

youdao

It is lonely to live alone and I am afraid to sleep alone.

独居很孤单，我害怕自己一个人睡。

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.

CNN: Six big kid sleep problems

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.

WHITEHOUSE: President Obama Speaks for Gay Civil Rights

Since the study appeared, they have been fielding calls from other patients and sleep clinics 95 last week alone.

WSJ: Unraveling the Riddle of Too Much Sleep