go down the tubes
US /ɡoʊ daʊn ðə tuːbz/
UK /ɡoʊ daʊn ðə tuːbz/

1.
徹底失敗, 完蛋, 破產
to fail completely or be ruined
:
•
The company started to go down the tubes after the scandal.
醜聞之後,公司開始徹底失敗。
•
If we don't fix this problem, our whole plan will go down the tubes.
如果我們不解決這個問題,我們的整個計劃就會徹底失敗。