萬無一失
wànwúyīshī
ㄨㄢˋ ㄨˊ ㄧ ㄕ
Simplified 万无一失
- 1surefire; absolutely safe (idiom)
Example
想長命百歲有一個萬無一失的方法:每天吃一顆獅子頭,吃一百年。
xiǎng chángmìngbǎisuì yǒu yíge wànwúyìshī de fāngfǎ měitiān chī yì kē shīzitóu chī yì bǎinián
There's one surefire way to live to a ripe old age: eat a meatball a day for a hundred years.