Cleaning the house, making the bed, shopping, mowing and gardening are all forms of physical activity.

清理房间、整理床铺、购物、割草和园艺都是身体活动的形式。

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For example, a system designer is interested in the logical and physical aspects of a system, so the most useful forms are class and sequence diagrams rather than use-case and activity diagrams.

例如，系统设计人员对系统的逻辑和物理方面感兴趣，因此最有用的形式就是类和序列关系图，而不是用例和活动关系图。

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A trend towards decreased physical activity levels due to the increasingly sedentary nature of many forms of recreation time, changing modes of transportation, and increasing urbanization.

由于多种形式娱乐活动越来越倾向于久坐不动、不断改变的交通模式和日益增长的城市化，造成身体活动水平下降的趋势。

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