It was a hit-and-run. 这是一起肇事逃逸事件！
例句：
A:Can you help my friend please?It's an emergency.He was just hit by a car.
您能帮一下我的朋友吗？这是紧急情况。他刚被车撞了。
B:I'll call an ambulance.Let him lie down there.I know some first aid.
我会叫一辆救护车。让他躺在那里。我知道一些急救。
A:Is there a hospital nearby?
这附近有医院吗？
B:Yes,there is a large emergency department not far from here.The ambulance is on its way.What happened?
有的，离这不远处有一个大的急诊科。救护车在来的路上了。发生了什么？
A:It was a hit-and-run.We were just crossing the road when a car crashed into him and drove straight off.
这是一起肇事逃逸事件。我们正在过马路，这时一辆车撞到了他，然后径直开走了。
B:Take your sweater off and we can warp it around his arm.Do you know what blood type your friend is?
把你的毛衣脱下来，我们把它包裹在他的膀子上，您知道您朋友是什么血型吗？
A:Yes,he is O positive.Do you think our travel insurance will cover the hospital visit?
知道，他是O型阳性。您认为我们的旅游保险能覆盖去医院看病吗？
B:I'm not sure but we need to get your friend to a doctor straight away.I can hear the siren;the ambulance is around the corner now.
我不确定，但是我们需要让您的朋友立刻去看医生。我能听到警笛声了。救护车就在附近了。