jolty

1. Do not make a round trip jolty porch rail, lest the welding line of baluster bottom ruptures.
   不要往返摇动阳台栏杆，以免栏杆底部的焊缝断裂。
2. When they came to the top of the rise he stopped; he would not risk the long and very jolty down-slope.
   当他们到了最高处时，他把车停住，他不肯向那不平的斜坡冒险下去了。

adj

1. causing or characterized by jolts and irregular movements
   1. a rough ride

   Synonym:    roughrockybumpyjoltingjumpy