This is why psychiatrists work a 50-minute hour.

正因为如此，精神病医生上班时每小时只工作50分钟。

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It is a three-hour drive but can be reached by a 20-minute hop in a private helicopter.

这段路程开车需要3个小时，而乘坐私人直升飞机20分钟就可以到达。

《柯林斯英汉双解大词典》

Take a 5-minute break if you can and walk around every hour.

如果可以的话，休息5分钟，每小时走走。

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But her supervisor appointed her to the new job at the eleventh hour at the very last minute.

VOA: special.2009.07.26

How do you know something like this doesn't happen every single night, every hour on the hour, ? every minute, every second?

你怎么知道这样的事,每一晚，每个小时，每分每秒都没有发生？

耶鲁公开课 - 死亡课程节选

They each have about a half an hour or 45-minute lessons.

他们每个人都有大概一小时或四十五分钟的课。

和钢琴老师 - SpeakingMax英语口语达人

As anyone in our office can tell you, my mood can change throughout the day, minute-by-minute, hour-by-hour, week days or weekends.

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It and e-mail offer so much distraction on a minute-by-minute, hour-by-hour basis that we find it nearly impossible to give our full attention to higher-level tasks.

FORBES: Time Management Secrets Anyone Can Use

It and e-mail provide so much distraction on a minute-by-minute, hour-by-hour basis that we find it nearly impossible to give our full attention to higher-level tasks.

FORBES