down the tube

• 处于失败情况；完蛋

down the tube的用法和样例：

例句

1. The dictator met his doom after ten years of rule.
   独裁者统治了十年终於完蛋了。
2. The hen started clucking after she laid an egg.
   母鸡下完蛋后，咯咯地叫个不停。