关于physicalcontactispar的百科

• Inmanysports，physicalcontactispartofthegame.Butwhenathl...

• 问题详情：Inmanysports，physicalcontactispartofthegame.Butwhenathleteshittheirheads，thehitcancauseconcussions（脑震荡）.Concussionshavelongbeenaconcernforprofessionalathletes，butthey'vebecomemorecommonamongyoungplayerstoo.Between2001and2009，thenumberofkidsunde...
• 2021-09-2030711