till the cows come home

US /tɪl ðə kaʊz kʌm hoʊm/
UK /tɪl ðə kaʊz kʌm hoʊm/
"till the cows come home" picture
1.

到天荒地老, 沒完沒了

for a very long time; indefinitely

:
You can argue about it till the cows come home, but it won't change anything.
你可以爭論到天荒地老,但這不會改變任何事情。
She can talk about her cats till the cows come home.
她可以沒完沒了地談論她的貓。