go as red as a beetroot

US /ɡoʊ æz rɛd æz ə ˈbiːtruːt/
UK /ɡoʊ æz rɛd æz ə ˈbiːtruːt/
"go as red as a beetroot" picture
1.

カブのように真っ赤になる, 顔を赤らめる

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.
彼女は自分の間違いに気づいたとき、カブのように真っ赤になった
He went as red as a beetroot when his secret was revealed.
彼の秘密が明かされたとき、彼はカブのように真っ赤になった