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Example
歷史課上，老師介紹了四人幫在文化大革命中的角色。
历史课上，老师介绍了四人帮在文化大革命中的角色。
In history class, the teacher explained the Gang of Four's role in the Cultural Revolution.
Usage Notes
This is a historical proper noun and does not simply mean any group of four people.
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