I have to work very long hours, about eleven hours a day.

我每天要工作很长时间，大约11个小时。

youdao

It's eleven hours to Beijing.

旅程有多长？到北京有是一个小时。

youdao

We arrive in eleven hours.

我们再过十一个小时到达。

youdao

A new study found better results in four-year-olds who go to bed around the same time every night and sleep at least eleven hours.

VOA: special.2010.06.09

Now sleep macho is "I sleep eleven hours."

现在他们会说“我睡了11小时”

耶鲁公开课 - 心理学导论课程节选

Three-person teams from each school had five hours to solve eleven real world problems.

VOA: special.2010.03.11

He suggested that we should think about it, but maybe ten or eleven hours a day was more appropriate.

FORBES: Move up http://i.forbesimg.com t Move down

Most airlines fly aircraft for ten to eleven hours per day.

FORBES: Spirit Airlines: We Board an A320 in 20 Minutes

Luke Morrison, 29, completed the 50-mile route around the island in just over eleven hours, returning to Hill Head near Fareham at 17:15 BST on Monday.

BBC: Luke Morrison