英 [tʃʌk ʌp ðə spʌndʒ] 美 [tʃʌk ʌp ðə spʌndʒ]
投降，认输：指放弃抵抗，承认失败。
give up in the face of defeat of lacking hope; admit defeat
同义词： drop out / give up / fall by the wayside / drop by the wayside / throw in / throw in the towel / quit
承认失败(chuck up the sponge), 此释义来源于网络辞典。
... give up放弃 chuck up the sponge承认失败, 认输... inject注射 ...
投降，认输；承认失败
Why did you chuck up the sponge when you were so near to winning?
你为什么在就要胜利的时候认输呢？