GIGO

例句：

1. 1.The plan was GIGO, so we had to start over.
   这个计划是无效的，所以我们不得不重新开始。
2. 2. He gave up on trying to fix the car, thinking it was GIGO.
   他放弃了修理汽车的努力，认为这是不可能的。
3. 3. The new policy is GIGO, so it won't work as expected.
   新政策是无效的，所以不会按预期工作。