1、All kinds of freight cars, tractor, semi-trailer low flatbed truck etc.
各類貨運汽車，牽引車，半掛車，低平板車等各類工程車等。

2、The company now I worked in is a factory focus on production of trailer and semi-trailer parts.
富華集團是國內(nèi)知名的掛車，半掛車整件，零件制作的大型工廠。

3、Have oil tank semi-trailer model and chemical liquid tank truck model.
有運油半掛車、化工液體運輸等車型。

semi-trailer翻譯