plug away
US /plʌɡ əˈweɪ/
UK /plʌɡ əˈweɪ/
1.
to work hard and steadily at something, especially over a long period
:
•
She had to plug away at her thesis for months before it was finished.
•
If you just plug away, you'll eventually see results.
to work hard and steadily at something, especially over a long period