Correct

马失前蹄

/ mǎ shī qián tí /
Strokes

Definition

lit. the horse loses its front hooves/fig. sudden failure through miscalculation or inattentiveness

Example

Definition

the horse stumbles; the horse trips (and falls on his knees)—make a mistake by accident; have an accidental setback

1
rén
此人
bèizi
一辈子
zuòshì
做事
xiǎoxīnjǐnshèn
小心谨慎
,
dàn
yǒu
shīqián
马失前蹄
de
shíhou
时候

This man has been cautious all his life, but he's nonetheless slipped occasionally.