开倒车

例句：

1. 1. 后面的，背面的；2. 倒退的；3.
   时间、空间等
2. 1. The car is backing up because the traffic lights are red.
   汽车正在倒车，因为交通灯是红的。
3. 2. She backed down from her previous demand for higher wages.
   她放弃了之前要求更高的工资的要求。
4. 3. He backed out of the deal because he had second thoughts.
   他退出了交易，因为他改变了主意。