名词
中文翻译：丰富的知识或学问同义词
同义词：
['learned', 'well-read', 'knowledgeable']
例句：
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1. He has a rich background in history and literature.
他有着丰富的历史和文学背景。
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2. The scholar is known for his extensive knowledge of the subject.
这位学者以其广泛的专业知识而闻名。
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3. I'm always impressed by how much he knows about different cultures.
我总是对他的不同文化知识印象深刻。