someone's back is turned

US /ˈsʌm.wʌnz bæk ɪz tɜrnd/
UK /ˈsʌm.wʌnz bæk ɪz tɜrnd/
"someone's back is turned" picture
1.

عندما يكون ظهر شخص ما مدبراً, عندما لا ينتبه شخص ما

when someone is not looking or paying attention

:
The children started playing pranks as soon as their mother's back was turned.
بدأ الأطفال في لعب المقالب بمجرد أن أدارت والدتهم ظهرها.
He always tries to sneak a cookie when my back is turned.
يحاول دائمًا التسلل لأخذ قطعة بسكويت عندما أدير ظهري.