Haihe River is the mother river.

海河是天津的母亲河。

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In the history, the mountain area of the Haihe River valley was a dense forest.

历史上的海河流域山区曾经草深林密。

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In the history, the mountain area of the Haihe River valley was a dense forest.

历史上的海河流域山区曾经草深林密。

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