國語辭典食之無味，棄之可惜
吃起來毫無滋味，丟棄又覺得可惜。語本《三國志．卷一．魏書．武帝紀》裴松之注引《九州春秋》：「夫雞肋，棄之如可惜，食之無所得，以比漢中，知王欲還也。」比喻東西沒什麼用處，又捨不得丟掉。也作「食之無味，棄之不甘」。
英語 lit. to be hardly worth eating, but it would still be a pity to discard it (idiom), fig. some things have little to no value, yet one is still reluctant to part with them
© 漢典