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same generation; one's generation
同世代に負けたくないと強く感じる。
I strongly feel that I do not want to lose to my peers.
同世代の友人と集まって青春の思い出を語り合った。
I got together with friends of the same generation and shared memories of our youth.
同世代の中で突出した業績を残した科学者だ。
This is a scientist who left outstanding achievements among peers of the same generation.