prick up your ears
US /prɪk ʌp jʊər ɪərz/
UK /prɪk ʌp jʊər ɪərz/

1.
豎起耳朵, 專心聽
to listen carefully or suddenly become attentive
:
•
When I mentioned a pay raise, everyone at the meeting began to prick up their ears.
當我提到加薪時,會議上的每個人都開始豎起耳朵。
•
The dog would always prick up its ears at the sound of the doorbell.
狗一聽到門鈴聲就會豎起耳朵。