mobile

a. 可移动的,易变的
n. 活动装置

She is much more mobile now that she has a car.

她现在出去方便多了，她有了一辆汽车。

A decorated exhibit or scene mounted on a mobile platform and pulled or driven in a parade.

游行花车在一个可移动的平台上布置好的游行时可拉动或推动的展览或场景