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increasingly; more and more; decreasingly (when declining); less and less
台風の勢力が益々強くなってきているそうだ。
It is said that the typhoon is getting increasingly stronger.
益々寒くなってきましたね。
It's getting colder and colder, isn't it?
技術の進歩によって私たちの生活は益々便利になっていく。
Advances in technology are making our lives increasingly convenient.