The Shanghai Composite Index was down 2.9% on Wednesday.

上证综合指数在星期三下降了2.9%。

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In a single day the Shanghai Composite index gave up its gains for the year.

仅一天之内上海综合指数就放弃了全年收益。

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The Shanghai Composite Index was a global standout, rising more than 30%.

上证综合指数在全球股市中表现出众，涨幅超过30%。

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The Shanghai Composite Index finished in negative territory for the second consecutive year, down 21.7%.

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It has outperformed the Shanghai Composite Index, which dropped 5% in the same period.

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The Shanghai Composite Index slipped 0.4% in the mainland and Hong Kong's Hang Seng Index was flat.

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