put your finger on
US /pʊt jʊər ˈfɪŋ.ɡər ɑːn/
UK /pʊt jʊər ˈfɪŋ.ɡər ɑːn/
1.
指出, 確切說明
to identify exactly what is wrong or what has caused a problem
:
•
I know something is wrong, but I can't quite put my finger on it.
我知道有些不對勁，但我無法確切地指出是什麼。
•
The manager couldn't put his finger on why sales were declining.
經理無法指出銷售額下降的原因。