/ˈgaɪdlaɪn ||; ˈgaɪdˌlaɪn/noun[C] 1 [usu.pl] official advice or rules on how to do sth 指导方针；准则
2 something that can be used to help you make a decision or form an opinion 标准: These figures are a useful guideline when buying a house. 这些数字在买房子时可作为有用的标准。