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の努力は水泡に帰した

…'s efforts were in vain

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phrase Rare #44,357
…'s efforts were in vain 水泡に帰す is an idiom meaning that something came to nothing or was wasted.
JA: 彼の計画は失敗し、これまでの努力は水泡に帰した。
EN: His plan failed, and all his 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.

トムの努力は水泡に帰した。

Tom's efforts 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.