break away 挣脱;逃脱;摆脱（束缚或控制）;离开;脱离
This love has crossed the identity and status, break away the material and money.
这种爱情跨越了身份与地位，脱离了物质与金钱。
break away from sb.脱离、离开、背弃
I broke away from him and rushed out into the hall.
我挣脱了他，冲进了大厅
break off 折断、突然中断
The two wings of the aircraft broke off on impact.
飞机的两个机翼遭受撞击折断了
away和off都有离开的含义，那么为什么当away和off搭配的时候会有2种不同的含义呢？其实break away还是遵从这个本义的，但是这个break off 为什么会有折断、突然中断的含义呢？
请科普