have a heart of stone
US /hæv ə hɑrt əv stoʊn/
UK /hæv ə hɑrt əv stoʊn/

1.
鐵石心腸, 冷酷無情
to be very unsympathetic and unkind
:
•
You must have a heart of stone to ignore someone in need like that.
你一定是鐵石心腸,才會那樣忽視有需要的人。
•
Despite her tough exterior, she doesn't really have a heart of stone.
儘管她外表堅強,但她並非真的鐵石心腸。