at heart
US /æt hɑːrt/
UK /æt hɑːt/
成语
骨子里, 本质上
in one's true character or innermost feelings, as opposed to one's outward appearance or behavior
示例:
•
He seems tough on the outside, but he's a kind person at heart.
他外表看起来很强硬，但骨子里是个善良的人。
•
Despite her serious demeanor, she's still a child at heart.
尽管她举止严肃，但骨子里还是个孩子。