run-of-the-mill
US /ˌrʌn.əv.ðəˈmɪl/
UK /ˌrʌn.əv.ðəˈmɪl/

1.
普通, 平庸, 一般
ordinary and not special or exciting in any way
:
•
It was just a run-of-the-mill movie, nothing spectacular.
那只是一部普通電影,沒什麼特別的。
•
His performance was pretty run-of-the-mill.
他的表現相當普通。