trailer trash
noun [ U ] US informal disapproving uk/ˈtreɪ.lə ˌtræʃ/ us/ˈtreɪ.lɚ ˌtræʃ/
住活动房屋的废物（侮辱性的说法，指地位低下的贫困白人，他们很多住在拖车式活动房屋停靠场里）
an offensive way of referring to poor lower-class white people who typically live in trailer parks
They said that they didn't want trailer trash living on their doorstep. 他们说，他们可不想让住活动房屋的废物住在自己家门口。