the generation gap
US /ðə ˈdʒen.ə.reɪ.ʃən ˌɡæp/
UK /ðə ˈdʒen.ə.reɪ.ʃən ˌɡæp/

1.
lacuna geracional, diferença de gerações
differences in attitudes or behavior between young and older people, which can cause a lack of understanding
:
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There's a significant generation gap when it comes to technology.
Existe uma significativa lacuna geracional quando se trata de tecnologia.
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The movie explores the challenges of the generation gap within a family.
O filme explora os desafios da lacuna geracional dentro de uma família.