start up
phrasal verbstart up | start something  up 
- to begin working, happening, etc.; to make something do this(使)启动,发动,开始 - I heard his car start up.我听见他的汽车发动了。 
- Start up the engines!发动引擎! 
- She started up a conversation with the woman sitting next to her.她开始和坐在身边的女子攀谈起来。 
 
- I heard his car start up.