Over a decade or so, American teens' social media use shifted from an occasional activity to a routine one.

在过去十年左右的时间里，美国青少年对社交媒体的使用从偶尔的活动变成了日常活动。

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As a general rule, all forms of activity lead to boredom when they are performed on a routine basis.

一般来说，当任何活动以一种常规的形式开展时就会变得无聊。

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This is an example of how to automate a routine activity.

下面是一个如何自动化一个日常活动的例子。

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Keeping a record of your physical activity routine inspires you to do more.

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To show this, start with a relatively neutral definition of job: any routine activity for which we earn income.

FORBES: Of Course the Government Can Create Jobs!

To them, a job is any routine activity for which we earn income paid by an entity required to earn a profit .

FORBES: Of Course the Government Can Create Jobs!