汗马功劳

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指在战场上建立战功或在工作中的贡献，例❶ 十多年来他一直转战疆场，奋勇杀敌，为国为民立下了许多汗马功劳。

For the last ten years or more，he has won many glorious battles in the field against the enemy．

❷ 为了此次双边贸易谈判，他夜以继日地东奔西走，立下了不少汗马功劳。

During the bilateral trade negotiations，he spared neither day nor night to make them a success．His contrlbution was indeed great and is highly appreciated．