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一清二楚

yī qīng èr chǔ

perfectly clear; down to the last detail

Character by character

一yī
one
清qīng
clear
二èr
two
楚chǔ
distinct

Example

他把那天发生的事记得一清二楚。
He remembers everything that happened that day down to the last detail.

Tone: neutral.

Usage and origin

Splits 清楚 with 一…二… for emphasis and usually follows 得: 说得、记得、查得一清二楚.

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