Until a railroad could be built, supplies were carried west in wagons pulled by horses or oxen.

VOA: special.2009.05.28

So springs are always pushed or pulled on either side with the same force.

所以弹簧两边永远都是受到,相同的压力或拉力

耶鲁公开课 - 基础物理课程节选

A stagecoach was a large, enclosed wagon pulled by teams of horses or mules.

VOA: special.2010.04.26