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の努力は水泡に帰した

efforts came to nothing

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phrase Rare #41,029
efforts came to nothing A formal idiomatic expression meaning that someone's efforts were wasted or achieved nothing. 水泡に帰す literally means “return to bubbles,” but it is used figuratively.
JA: 長年の努力は水泡に帰した。
EN: Years of effort came to nothing.

彼の努力は水泡に帰した。

His efforts came to nothing.

私たちの努力は水泡に帰した。

All our efforts came to nothing.

トムの努力は水泡に帰した。

Tom's efforts came to nothing.

彼女のすべての努力は水泡に帰した。

All her efforts were in vain.