my primary motivation behind buying a car 中的behind 怎么理解

my primary motivation behind buying a car 中的behind 怎么理解 My primary motivation behind buying a car,despite the scarci My primary motivation behind buying a car, despite the scarc motivation behind ... I left my keys behind.我忘了带钥匙了.中的behind怎么理解 behind （19)---Must I park my car behind the building? he gets behind the wheel of a car ghost behind my eyes A man behind my mother is my uncle.这句话怎么改错? I see a mouse behind my computer.对behind my computer 画线提问 第一题Was it hit by another car?My car was hit from behind.Oh,n