人生如棋，每一步都需深思熟虑，才能走出精彩人生。钢纤维混凝土

　　US adaption of a classic UK documentary series called "Up". Part 1 from 1991 and part 2 from 1998 followed the same group of economically, racially and socially diverse kids growing up in America in the 90s. They are now 21.