1.break away
（1）突然逃掉或离开 The man broke away from his guards.
(2)断绝往来，脱离， 和-----决裂 He tried to break away from me.
(3)改掉（习惯），破除旧法 I should break away from such habit.
2.break down
(1)(机器、车辆等)坏了 We are sorry to arrive late, but the car broke down.
(2)(计划，谈话等)失败，坚持不下去 All our plans broke down.
(3)（身体）跨了，感情控制不住（哭起来了） His health broke down.
(4)（谈话、通讯等）中断 The conversation broke down at this point.
(5)分解，分化 After many years, rocks break down into dirt.
