go as red as a beetroot
US /ɡoʊ æz rɛd æz ə ˈbiːtruːt/
UK /ɡoʊ æz rɛd æz ə ˈbiːtruːt/

1.
얼굴이 붉어지다, 몹시 부끄러워하다
to have your face turn a deep red color, usually due to embarrassment or shame
:
•
When she realized her mistake, she went as red as a beetroot.
그녀는 자신의 실수를 깨달았을 때, 얼굴이 붉어졌다.
•
He went as red as a beetroot when his secret was revealed.
그의 비밀이 드러났을 때, 그는 얼굴이 붉어졌다.