hang fire tyre

例句：

1. 1. We need to replace the old tires with new ones before we hit a steep hill.
   我们需要在上坡前换上新轮胎。
2. 2. The mechanic checked our car and found that the back-up tire needed to be replaced.
   汽车修理工检查后发现备用轮胎需要更换。
3. 3.He pulled over to the side of the road and got out his spare tire to fix the flat.
   他靠边停车，拿出备用轮胎来修瘪了的轮胎。