B1 [ S or U ] understanding of or information about a subject that you get by experience or study, either known by one person or by people generally知识;学问;学识;了解;理解
[ U ] the state of knowing about or being familiar with something知道;熟悉(某事)
More examples
Her knowledge of computers is quite awe-inspiring.
She has an intimate knowledge of Tuscany, where she has lived for 20 years.
He tried to impress me with his extensive knowledge of wine.
I only have a limited knowledge of Spanish.
He went to visit her without my knowledge.
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