When we returned from school, we were alone for about half an hour, until mom was home from work.

当我们从学校回来，我们独自呆了约半小时，直到妈妈下班回家。

youdao

It takes half an hour to go on foot from my home to my school and back.

从我家到学校来回要走半小时。

《新英汉大辞典》

For junior-high students, it should be "no more than an hour and a half", and two for high school students.

对于初中生而言应该是“不超过一个半小时”，对于高中生则应该是两个小时。

youdao

I thought I would describe forward rates in terms of the coffee hour at The London School of Economics in the '20s.

我也许应该用20年代伦敦政经,咖啡时间的情形来描述远期利率

耶鲁公开课 - 金融市场课程节选

I just needed one more credit hour when I was going to school,

我上学的时候就差一个学分，

攀岩的刺激 - SpeakingMax英语口语达人

What Hicks said--this is the coffee hour conversation at The London School of Economics he said, it's right now 1925 but if you want to invest or borrow in 1926 I can do it for you.

希克斯在伦敦政经学院的那次,咖啡时间中谈到,现在是1925年,但如果你想在1926年投资或贷款,我可以帮你实现

耶鲁公开课 - 金融市场课程节选

Chase Elementary School, is in a tough, almost entirely Spanish-speaking, Chicago neighborhood, yet 40 or so kids come to school an hour early each day just to take one of the company's Accelerated Reader computer quizzes.

FORBES: Instant feedback in the classroom

Outside of health care, its work in education has 35 employees tutoring kids at a nearby school during lunch hour several days a week.

FORBES: The Advisory Board Company Finds a Prescription for Business and Social Impact

Are you ready for a 60 hour school and work week?

FORBES: Hey Kid, Here's How To Get A Job