Yí / gè / xiǎo / xiǎo / de / shī / wù / kě / néng / ràng / zhī / qián / de / nǔ / lì / quán / gōng / jìn / qì

一个小小的失误可能让之前的努力全功尽弃。

A small mistake could wipe out all the effort made beforehand.