trailer

n.

1. 拖车, 挂车
   • The car was pulling a trailer, which carried a boat.
     那部车拉着一辆拖车, 拖车上又载着一只船。
2. (电影或电视节目的)预告片
   • I watched a trailer for the screenplay of his memoirs.
     我看过以他的回忆录改编成电影的预告片。