till the cows come home
US /tɪl ðə kaʊz kʌm hoʊm/
UK /tɪl ðə kaʊz kʌm hoʊm/

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。