Great care had to be taken with the control systems for a powered trailer because, when turning, it can push the tractor unit over.

在拖车运行时必须谨慎地操纵控制系统，否则牵引机就会被推倒。

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Use to estimate turning radii for a typical tractor with semitrailer and full trailer.

用于估计带有半挂车和全挂车的典型牵引车的转弯半径。

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Some trucks moving from Chengdu, the provincial capital, to Beichuan, meanwhile, carried less-traditional relief cargo, including five tractor-trailer trucks filled to the brim with loose cucumbers.

一些卡车正从省会成都开往北川，车上装载着非传统的救援物资，包括五辆满载散装黄瓜的大卡车。

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The multi-part accident involved two school buses, a GMC pick-up truck and a truck-tractor with no trailer.

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It is home to a Mennonite community that gained attention in 2010 when nine of its members were killed in a head-on collision with a tractor-trailer.

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Using recycled-steel frames with large hinges, Blu homes fold up to fit on a standard tractor-trailer that handles cargo up to 8.5 feet wide.

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