at the forefront of innovation or technology
नवाचार या प्रौद्योगिकी के अग्रिम मोर्चे पर (navaachar ya praudyogiki ke agrim morche par)
"The laboratory is on the cutting edge of artificial intelligence research."
"प्रयोगशाला कृत्रिम बुद्धिमत्ता अनुसंधान के अग्रिम मोर्चे पर है।" (prayogshaala krutrim buddhimatta anusandhan ke agrim morche par hai)
behave in a manner appropriate to your age
feeling hopeless and defeated
a person with no prior knowledge or experience
behind the surface; the underlying mechanism or system
to say something positive and hope it continues to be good
to have a big, broad smile showing happiness