形容词
名词
1. 迅速的;无法控制的;失控的
You use runaway to describe a situation in which something increases or develops very quickly and cannot be controlled.
2. 离家出走者(尤指小孩)
A runaway is someone, especially a child, who leaves home without telling anyone or without permission.
3. (车辆、动物等)失控的
A runaway vehicle or animal is moving forward quickly, and its driver or rider has lost control of it.