To gain little but lose much; the loss outweighs the gain; the game is not worth the candle.
为了省下一点小钱，却耗费了大量时间和精力去解决问题，真是援鳖失龟。
To save a small amount of money, but expend a great deal of time and energy to solve a problem, is truly a case where the loss outweighs the gain.
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