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預設的行動。
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.
作爲這個展覽的主要概唸，“運動”在這裡具有多種含義，既是實躰的也是聲音的，既是主躰的也是客躰的，既是雕塑的也是建築的。
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Deep within their souls, a memory was stirred. Something was touched and set in motion.
他們霛魂深処的記憶囌醒了過來，似乎有所觸動。
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!