By 2016, the average American high school senior said they spent six hours a day writing text messages, on social media, and online during their free time.

截至2016年，美国高中高年级学生说他们在空闲时间里平均每天要花6个小时的时间写短信、上社交媒体以及上网。

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To make a living, Liu collected rubbish, and in high school he worked 18 hours a day during summer vacations.

为了谋生，刘捡垃圾，在高中时他在暑假期间每天工作18个小时。

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Give your workplace a spring facelift! Living magazine is offering three prizes of between ￡10, 000 and ￡50, 000 to be spent on improving the school, college or office where you spend so many hours each day! If you win, the money will be yours to spend as you wish to make life more pleasant.

给你的工作场所来个春季大改造吧！《生活》杂志为你提供了3个奖项，奖金从1万英镑到5万英镑不等，用于改善你每天花费大量时间学习或工作的学校、学院或办公室的环境。如果你中奖了，这些钱将由你随意使用，让生活更愉快。

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Like in high school, every day I would be in school for like six and half hours.

我在高中的时候，每天都会在学校学习六个半小时。

耶鲁的忙碌生活 - SpeakingMax英语口语达人

The KIPP schools have radically redesigned the school day and school week, extending hours and even the number of days that children attend school.

FORBES: Educators and Innovation

Research shows that up to 40 percent of what children consume every day takes place during school hours and that 80 percent of children who were overweight between the ages of 10 to 15 were obese by age 25.

WHITEHOUSE: Bringing Healthy, Affordable Food to Underserved Communities | The White House

Pupils in England should spend more hours at school each day and have shorter holidays, the Education Secretary Michael Gove has argued.

BBC: Gove urges longer days and shorter holidays for pupils