Believeitornot,ifyoudonotuseyourarmsoryourlegsforalongt...
问题详情：Believeitornot,ifyoudonotuseyourarmsoryourlegsforalongtime,theybecomeweak.Whenyoustartusingthemagain,theyslowlybecomestrongagain.Everybodyknowsthat.Yetmanypeopledonotseemtoknowthatmemoryworksi...