watch sb do sth 观看某人做某事(全过程) watch sb doing sth 观看某人做某事(一瞬间,正在做) see sb do sth 看见某人做某事(全过程) see sb doing sth 看见某人正在做某事(一瞬间,正在做)
答：The summer Changsha, the weather is burning hot. On the street personare very ma...详情>>
答：Where does Martin come from?详情>>
