His knowledge of the language is fair.
他对这种语言的了解相当不错。
I have only a limited knowledge of the language.
我对这门语言只有有限的了解。
He acquired a knowledge of the language by careful study.
他通过认真学习掌握了这门语言。
My aim of going to England is to improve my knowledge of the language.
我去英国的目的是为了提高我的英语水平。
He has only a theoretical knowledge of the language.
他只有这种语言的理论知识。
He has only a theoretical knowledge of the language.
他只有这种语言的理论知识。
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