one-track mind
US /ˈwʌnˌtræk ˈmaɪnd/
UK /ˈwʌnˌtræk ˈmaɪnd/
1.
一根筋, 思想狹隘
a mind that thinks about one particular thing and nothing else
:
•
He's got a one-track mind when it comes to cars.
他對汽車有一根筋。
•
All she talks about is her new project; she has a real one-track mind.
她只談論她的新項目；她真是一根筋。