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- 問題詳情：Seventypercentofourplanetiscoveredbyonehugebodyofseawater﹣theocean．In2008，theUnitedNationsrecognized（確立）June8asWorldOceansDay．It'sadaytothinkabouttheimportantrolethattheoceansplayinourlives，thedangersthatouroceansarefacingandtheactionwecantaketop...
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