形容词
中文翻译：免费的
同义词：
['liberal', 'unrestricted', 'unencumbered']
例句：
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1. The free software is very popular among users.
免费软件非常受用户欢迎。
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2. He enjoys reading books for free on the internet.
他喜欢在网上免费阅读书籍。
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3. The government has decided to offer free healthcare services to all citizens.
政府决定为所有公民提供免费的医疗服务。