candle

be unable to hold a candle to

(informal)be not nearly as good as

(非正式)比不上，与…不能相比

nobody in the final could hold a candle to her.

参加决赛的人中没人能比得上她。

(the game's) not worth the candle

the potential advantages to be gained from doing something do not justify the cost or trouble involved

不值得做；得不偿失