an iron hand in a velvet glove

US /æn ˈaɪərn hænd ɪn ə ˈvelvɪt ɡlʌv/
UK /æn ˈaɪərn hænd ɪn ə ˈvelvɪt ɡlʌv/
"an iron hand in a velvet glove" picture
1.

戴著天鵝絨手套的鐵腕, 外柔內剛

a person who is outwardly gentle but inwardly firm and unyielding

:
The new manager has an iron hand in a velvet glove; she's polite but gets things done.
新經理是一個戴著天鵝絨手套的鐵腕人物;她很有禮貌,但能把事情辦好。
Despite his gentle demeanor, the CEO ruled the company with an iron hand in a velvet glove.
儘管他舉止溫和,但這位首席執行官以戴著天鵝絨手套的鐵腕管理著公司。