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Definition

To know or understand in detail.

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How it's used

Focuses on the process of acquiring comprehensive knowledge or understanding of a subject. It carries a slightly formal or professional tone, often appearing in business reports or serious discussions rather than casual small talk. While it implies knowing something well, it specifically highlights the thoroughness of the investigation or study involved.

Examples

Have you learned all the details of this matter yet?
I have already become fully familiar with the entire plan.

Common phrases

to know the contents in detail
to be fully informed of the situation

Common mistake

Avoid using this in everyday casual settings where 清楚 or 了解 would be more natural. It is not a common verb for simple recognition of facts.

Grammar color guide

Noun
Verb
Adjective
Adverb
Pronoun
Classifier
Particle
Connector