hitchhiker       
noun [ C ] uk/ˈhɪtʃ.haɪ.kər/ us/ˈhɪtʃ.haɪ.kɚ/
 免费搭车旅行的人,搭便车的人
someone who travels by getting free rides in someone else's vehicle
  Jack often picks up hitchhikers. 杰克经常接载搭便车的人。 
 We let the two hitchhikers out at the border. 我们在边境让这两个搭便车的人下了车。 
 See: hitchhike
 - More examples
 - My father told me to never pick up a hitchhiker.
 - He's never picked up any hitchhikers in the time he's been a trucker.
 - I ended up driving some hitchhikers to Manchester.
 - We saw a hitchhiker trying to thumb a lift at the motorway junction.