为了在服务模型上进行概括和构建工作，可能需要执行的主要活动有
The essential work activities that might be performed for outlining and building on top of the service model are
2008年为Salary.com进行的一项调查中，24岁以下的人群有53%表示这是他们消磨时间的主要活动，而41到65岁的人群中，这一比例仅为34%。
In a 2008 survey for Salary.com, 53% of those under age 24 said this was their primary 'time wasting' activity while at work, compared to just 34% for those between ages 41 and 65.
他们的主要活动一般有长距离漫步，骑自行车，划独木舟甚至跑步。
They may want to take long walks or bicycle or canoe rides, or even run.
这些记述对了解单士厘生前的主要活动和思想主张有积极的帮助，也有利于认识当时的社会面貌。
These descriptions are very helpful for us to understand Shan Shili's main activities and thought recognitions. What's more, it's useful for us to study the social features in the Late Qing Dynasty.
这些记述对了解单士厘生前的主要活动和思想主张有积极的帮助，也有利于认识当时的社会面貌。
These descriptions are very helpful for us to understand Shan Shili's main activities and thought recognitions. What's more, it's useful for us to study the social features in the Late Qing Dynasty.
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