set something in motion

常见例句

You are expected to complete something already set in motion.
你被期待去完成一些已预设的行动。
Here "motion"---the central concept of the project---has multiple meanings. What is set in motion is something both physical and sonic, subjective and objective, sculptural and architectural.
作为这个展览的主要概念，“运动”在这里具有多种含义，既是实体的也是声音的，既是主体的也是客体的，既是雕塑的也是建筑的。
blog.sina.com.cn
Deep within their souls, a memory was stirred. Something was touched and set in motion.
他们灵魂深处的记忆苏醒了过来，似乎有所触动。
blog.sina.com.cn

If you'd like you can also set it to be motion sensitive, in other words, if something moves it'll take the picture and send it to the site.
ENGADGET: pt's How-to Fridays: Turn your PC in to an automatic "moblog" picture posting machine!