6.down the drain<非正式>被浪费掉
That's another £20 down the drain.又浪费了20英镑。
7.to go down the drain<非正式>(be ruined)被毁灭；被浪费掉
Their public image was going down the drain.他们的公众形象化为了乌有。
Four years of his life had gone down the drain through injury.他因为伤病而荒废了四年的光阴。
【商】(fail financially)(经营)每况愈下
Small local stores are going down the drain.当地小商店的经营每况愈下。