關於Nextfallwhenyou的百科

•    Nextfallwhenyou seegeeseheadingsouthforthewinterorfl...

• 問題詳情：   Nextfallwhenyou seegeeseheadingsouthforthewinterorflyingin“V”formation(隊形）,youmightconsiderwhat sciencehasdiscoveredastowhytheyflythatway.    Aseachbirdspreadsitswings，itcreatesanuplift(上升力）forthebirdimmediatelyfol­lowing.Byf...
• 2020-03-248354