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7〈耳〉をそばだてる, ぴんと立てる(up)‖The dog 〜ed up his ears at the sound of the car door. 犬は車のドアの音に耳をぴんと立てた.🔗🔉

7〈耳〉をそばだてる, ぴんと立てる(up)‖The dog 〜ed up his ears at the sound of the car door. 犬は車のドアの音に耳をぴんと立てた.

ジーニアス英和大辞典 ページ 52398 でのup単語。