名词
中文翻译：百万富翁
同义词：
['rich man', 'wealthy man']
例句：
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1.He was a millionaire before he retired.
他退休前是个百万富翁。
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2. She became a millionaire through her successful business.
她通过成功的生意成为了百万富翁。
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3. The richest man in the world is worth more than $20 billion.
世界上最富有的人的财富超过200亿美元。