England's rugby sevens players have a secret weapon, but to find it they have to dig deep.
원문출처 : https://www.cnn.com/2019/05/24/sport/rugby-sevens-fitness-england-spt-intl-gbr/index.html
원문출처 : https://www.cnn.com/2019/05/24/sport/rugby-sevens-fitness-england-spt-intl-gbr/index.html