know sth inside out

Created by Tung NGUYEN on 2020-01-02 10:02:54
Last modified on 2020-01-02 10:02:54
informal
(C1) to know everything about a subject
He knows the system inside out. Anh ấy biết rõ (từng chân tơ kẻ tóc) của hệ thống.
Category: Idiom
Tags: 3
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