empty shell
US /ˈɛmp.ti ʃɛl/
UK /ˈɛmp.ti ʃɛl/

1.
空っぽの殻, 抜け殻
a person or thing that has lost its essential qualities or contents, leaving only the outward form
:
•
After the tragedy, he felt like an empty shell, devoid of emotion.
悲劇の後、彼は感情のない空っぽの殻のように感じた。
•
The old factory building was just an empty shell, waiting for demolition.
古い工場は取り壊しを待つばかりの空っぽの殻だった。