tractor-trailer
noun [ C ] US uk/ˌtræk.təˈtreɪ.lər/ us/ˌtræk.tɚˈtreɪ.lɚ/
重型货车
a large truck in two parts, one in the front for the driver and one behind where goods are carried. The connection between the two parts can bend in order to help the vehicle turn corners.
Compare: articulated