at the back of your mind
US /æt ðə bæk əv jʊər maɪnd/
UK /æt ðə bæk əv jʊər maɪnd/

1.
trong tâm trí, trong tiềm thức
a thought or worry that you have but that you are not thinking about consciously
:
•
The thought of the upcoming exam was always at the back of her mind.
Ý nghĩ về kỳ thi sắp tới luôn ở trong tâm trí cô ấy.
•
He had a nagging feeling at the back of his mind that he had forgotten something important.
Anh ấy có một cảm giác khó chịu trong tâm trí rằng mình đã quên một điều gì đó quan trọng.