Itiseasiertofloatintheoceanthanitistofloatinaswimmingpo...
問題詳情：Itiseasiertofloatintheoceanthanitistofloatinaswimmingpool.Doyouknowwhy?Oceanwaterisfullofsalt（鹽）—andsaltwatercanholdup（支撐）moreweightthanfreshwater.（淡水）Seeforyourself!YouWillNeed:●3cupsofwarmw...