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to envy; to be envious of; to be jealous of
若くして出世した彼の成功を羨む人は少なくない。
Not a few people envy his success.
海外旅行に行ける友人を羨んでいた。
I was envious of my friend who could travel abroad.
人を羨むより自分の努力に集中すべきだ。
Instead of envying others, you should focus on your own efforts.