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官方也開始對水庫及其支流的污染表示進(jìn)一步的擔(dān)憂.Officials have also started to sound more worried about pollution in the reservoir and its tributaries.兩個(gè)主要因素導(dǎo)致了夏季長江及其支流的特大洪流.Two major factors contributed to devastating summer along the River an...