VOA慢速英语:南非老年人练拳击对抗衰老

aerobic – adj. strengthening the heart and lungs by making them work hard for several minutes or more

boxing – n. the sport of fighting someone with your hands while wearing very thick gloves

burden – v. to make (someone) hold or carry something heavy or accept or deal with something difficult

granny – n. an informal term for grandmother

inspiring - v. making someone want to do something; to give someone an idea about what to do or create