The exhaust pipe fell off the car just as we were leaving, and after that it was just one disaster after another!我们正要离开时车子的排气管掉了，然后灾祸就接二连三地发生了！It was not until we felt the exhaust pipe scraping along the road that we realized there was something wrong with the car.我们感到排气管擦着了路面才发现汽车出问题了。