- 问题详情:DecemberusuallymarksthestartofhumpbackwhaleseasoninHawaii.Butexpertssaytheanimalshavebeenslowtoreturn.Thegiantwhalesareaniconicpartofwinterontheislandsandasourceofincomefortouroperators.ButofficialsattheHawaiianIslandsHumpbackWhaleNationalMar...
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