恩格斯与第二国际修正主义关系是国际恩格斯研究的一个重要问题。
The important topic of the international research on Engels is the relationship between Engels' thoughts and revisionism.
恩格斯与第二国际修正主义关系是国际恩格斯研究的一个重要问题。
The important topic of the international research on Engels is the relationship between Engels' thoughts and revisionism.
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