teach your grandmother to suck eggs
US /tiːtʃ jʊər ˈɡrændˌmʌðər tə sʌk ɛɡz/
UK /tiːtʃ jʊər ˈɡrændˌmʌðər tə sʌk ɛɡz/
1.
mengajar nenek menghisap telur, mengajar orang yang lebih berpengalaman
to try to teach someone something they already know, especially someone who is more experienced than you
:
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I tried to explain how to use the new software to my boss, but it was like teaching my grandmother to suck eggs; she's been using similar programs for decades.
Saya cuba menerangkan cara menggunakan perisian baharu kepada bos saya, tetapi ia seperti mengajar nenek saya menghisap telur; dia telah menggunakan program serupa selama berdekad-dekad.
•
He started giving me advice on cooking, but I've been a chef for twenty years. It was definitely a case of teaching your grandmother to suck eggs.
Dia mula memberi saya nasihat tentang memasak, tetapi saya telah menjadi chef selama dua puluh tahun. Ia sememangnya kes mengajar nenek menghisap telur.