hit-and-run
adj [attrib 作定语]
(a) (of a motorist) causing an accident and driving away immediately so as not to be identified (指机动车驾驶人)肇事後逃走的.
(b) (of a road accident) caused by a driver who does not stop to help, call an ambulance, etc (指交通事故)驾驶人肇事後不顾而去的.