I sleep for nine hours every night.

我每天晚上睡九个小时。

youdao

For nine hours.

整整9个小时。

youdao

Generally, society functions around people who sleep for nine hours, so I can't go out to do grocery shopping at five in the morning.

一般来说，社会是围绕着睡眠9小时的人们运作的，所以我不可以在凌晨5点去食品店购物。

youdao

Teenagers and young adults should aim for nine hours or more.

VOA: special.2010.06.09

so for about six, oh, no, it was nine hours a day, it's a long time ago.

每天要上六个，噢，不是，是九个小时的课，这都是很久以前的事情了。

纽约的人们 - SpeakingMax英语口语达人

For about nine hours a day, I would be in these acting classes,

每天我都要上差不多九个小时的表演课，

纽约的人们 - SpeakingMax英语口语达人

Police said the northbound carriageway was shut for nine hours as emergency crews attended the scene.

BBC: Lorry drivers killed in M6 eight-vehicle pile-up named

For nine hours, these two groups clustered around each other's laptops, solving problems, sharing ideas, sharing code, and asking questions.

WHITEHOUSE: Looking Back at the White House Hackathon

For nine hours on December 1st, witnesses held forth on the threat to the rule of law posed by false testimony.

ECONOMIST: Impeachment