求翻译：自然主义创作在美国20世纪文学历史不同时期的出现表明，它作为一种重要的文学运动生存下来，并在20世纪美国文学中形成一个创作传统，反映了现代美国生活各个历史阶段的主题。作为在文化体系中最高层次的大众意识核心，它所蕴涵的社会价值观也并非美国19-20世纪之交的偶然社会文化现象，而且随着自然主义文学的传承贯穿于整个20世纪的美国大众意识之中。是什么意思？

The creation of naturalistic different periods in the history of 20th century literature appear to indicate that it is to survive as an important literary movement, and form a creative tradition of 20th century American literature, reflecting the theme of the various historical stages of modern Amer

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The naturalism creation indicated in the American 20th century literature history different time appearance that, it took one important literature movement survival gets down, and forms a creation tradition in the 20th century US literature, had reflected modern US lives each historical stage subjec

Naturalist author in the United States in 20th century literature appear in different periods of history show that it survive as an important literary movement, and in the 20th century United States form a creative tradition in literature, reflecting the modern United States topics of all stages of

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