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![Coralreefs(珊瑚礁)arenotjustbeautifultolookat，butalsoveryu...]( "Coralreefs(珊瑚礁)arenotjustbeautifultolookat，butalsoveryu...")
Coralreefs(珊瑚礁)arenotjustbeautifultolookat，butalsoveryu...
问题详情：Coralreefs(珊瑚礁)arenotjustbeautifultolookat，butalsoveryuseful．Theyshelternearly25％ofoceanlifeandprovidefoodforbillionsofpeople．However,likemanyotherspecies，thisamazingecosystem(生态系统)isindange...
