得而复失 gain and lose again
Explanation
这个成语形容得到某种东西后又失去的状况。它强调了拥有与失去之间的反差，以及失去后的惋惜之情。通常用于形容某种美好的事物，如机会、爱情、财产等，在得到后又意外失去的场景。
This idiom describes the situation of getting something and then losing it again. It emphasizes the contrast between possession and loss, as well as the regret after the loss. It is usually used to describe something beautiful, such as an opportunity, love, or property, which is unexpectedly lost after being obtained.
Origin Story
话说当年诸葛亮南征孟获，七擒七纵，最终平定了南中叛乱。然则，这南征之路并非一帆风顺。诸葛亮率大军翻山越岭，一路艰辛，终于取得了决定性的胜利，眼看就要凯旋而归。然而，就在大军即将返回之际，一场突如其来的暴雨，冲垮了大军的后勤补给线，粮食、军械损失惨重。诸葛亮本以为大功告成，却因这场暴雨，导致大军粮草短缺，不得不重新调整计划，这真是“得而复失”的无奈。经过一番周折，诸葛亮最终还是带领大军回到了蜀汉。此役虽历经波折，但最终也为蜀汉稳定南疆作出了巨大贡献。这虽然是得而复失的经历，但是也体现了诸葛亮的智慧和坚韧不拔的精神。
In the Three Kingdoms period, Zhuge Liang, after successfully subduing Meng Huo seven times, was poised for a triumphant return. However, fate dealt him a cruel blow when sudden torrential rains destroyed their supply lines, leading to significant losses in food and supplies. This was a bitter pill to swallow, after securing such a significant victory. This unexpected setback was a prime example of 'getting and losing again'. But undeterred, Zhuge Liang, with his unwavering resolve, regrouped and led his army back home. Despite the challenges, his resilience and strategy secured the southern frontiers of Shu, ultimately achieving a success that far surpassed the initial losses.
Usage
形容得到后又失去的状况，常用于表达惋惜之情。
Describes the situation of getting something and then losing it again, often used to express regret.
Examples
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他辛辛苦苦攒钱买了一辆车，没开多久就出了事故，真是得而复失！
tā xīnxīnkǔkǔ zǎn qián mǎi le yī liàng chē, méi kāi duō jiǔ jiù chū le shìgù, zhēnshi dé ér fù shī!
He worked hard to save money to buy a car, but it was involved in an accident before long, a true case of getting something and losing it again!
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这场比赛，我们领先了大半场，最后时刻却反被对手逆转，真是让人惋惜，得而复失啊！
zhè chǎng bǐsài, wǒmen lǐngxiān le dà bàn chǎng, zuìhòu shí kē què fǎn bèi duì shǒu nì zhuǎn, zhēnshi ràng rén wǎnxī, dé ér fù shī a!
We were in the lead for most of the game, but in the last moment, the opponent turned the tables. Such a pity, getting something and then losing it again!