on its last legs Something that is on its last legs is in such bad condition that it will soon be unable to work as it should. 某事或者某物如果on its last legs，就是说它处于一种非常糟糕的状况，马上就不能正常运转了;快用坏了，快用到头了 I've had this laptop for five years now, and it's really on its last legs. 这个笔记本电脑我已经用了5年了，现在的确是快要报废了。 The company was on its last legs after the manager retired. 公司在经理退休后到了快解体的地步。