I think it's time to go to bed.

我想该睡觉了。

《牛津词典》

You'd better go to bed and nurse that cold.

你最好上床睡觉，把感冒治好。

《牛津词典》

I feel terrible—I think I'll go to bed.

我觉得难受，想去睡觉了。

《牛津词典》

He would go to bed after dinner. But he could hear the orchestra playing until 3 in the morning.

VOA: special.2009.01.31

I will tell them you have to go home tonight, go into your own bed and when we came back in the morning, we will be almost in Japan.

我会告诉他们今晚回家，爬上自己的床睡觉,当我们明早回学校的时候，我们差不多就到日本了。

麻省理工公开课 - 媒体、教育、市场课程节选

And out there I go to clean up the house after he goes to bed.

他睡觉之后我就要开始,打扫房间了。

耶鲁公开课 - 死亡课程节选

Initially, you use the handheld controller to tell the system about your normal routine - how warm you like it, when you are usually in and out, when you go to bed and when you are planning to go on holiday.

BBC: Saving the planet one gadget at a time

That is easier to do than having to go to bed earlier than normal.

WSJ: To Avoid Jet Lag This Summer, Travel Like a Scientist

"I go to bed and close my eyes and feel so incredibly serene, " he said.

WSJ: Unlikely NY scribe handwrites Good Book in 4 years