put a finger on

基本解释

You shall not put a finger on my daughter.
不許你動我女兒一根毫毛。
This helps put a finger on the business process without an elaborate effort.
這可幫助在不用進行大量細致工作的情況下了解業務流程。
"I knew something was wrong, but I couldn't put a finger on it, " says Paige, 45. "They were two sizes behind in clothes.
“我知道有些不對，但我指不出來，”45嵗的paige說，“他們比穿的衣服小兩號。

Correctness just doesn't do what it's supposed to do but then also design and design is one of those things it's a little harder to put your finger on initially, but it really is something to bear in mind especially toward terms end when you tackle your own final projects.
正確性“，就是有沒有做應該做事情,然後是“設計“,剛開始時，“設計“相對來說比較難一點,但是這是直到這個學期末,都要記住的東西,儅你処理的自己的最終方案時。
哈彿公開課 - 計算機科學課程節選

It is hard to put a finger on where the toughest competition to Hong Kong's status as a financial hub will come from.
ECONOMIST: Exchanges
The only thing anyone I talk to can put a finger on as a detraction is that he puts his foot in his mouth.
NPR: Joe Biden, Big Guy from Little State
" Adds Harvard School of Public Health epidemiologist Walter Willett: "It is hard to put a finger on a specific food that prevents cancer in general.
FORBES: Magazine Article