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Chinese dictionary
slgain something only to lose it again; lose after having got it
他对蒙古的征伐取得了一定战绩，不久之后，疆土得而复失。
He achieved some success in battle against the Mongols, but later the gains were quickly thrown away.
他对蒙古的征伐取得了一定战绩，不久之后，疆土得而复失。
He achieved some success in battle against the Mongols, but later the gains were quickly thrown away.