1.Their friendship will go down the drain.
（他们的友谊将要完蛋了。）收藏指正
2.A single mistake and all that time and money would go down the drain
只要发生一个错误, 全部的时间和金钱就将尽付东流.收藏指正
3.Our plans to go swimming went down the drain when it rained
天一下雨, 我们去游泳的计划就全落空了。收藏指正