How to say "是下官一时疏忽" (shì xià guān yì shí shū hū) in Chinese dialogue

shìxiàguānshíshū

It was my momentary negligence.

Idioms & Colloquial Expressions
INTERACTIVE SCRIPT TIMELINE
LINE 0137:09
zěn
huì
zhī

How could you not know?

LINE 0237:11
PLAYING SCENE
shì
xià
guān
shí
shū

It was my momentary negligence.

LINE 0337:13
zhī
liáng
shí
bèi
huàn
le

I didn't know the grain was replaced.

Show Information
Source MediaTV Series
Season & EpisodeS1 E22
Timestamp37:11
TMDB ID283952