阅读下面的诗歌。
                                                                                                                  送李端 
                                                                                                                   卢 纶 
                                                                       故关^①衰草遍，离别自堪悲。路出寒云外，人归暮雪时。
                                                                       少孤^②为客早，多难识君迟。掩泪空相向，风尘^③何处期?
【注释】①故关：故乡。②少孤：少年丧父、丧母或父母双亡。③风尘：这里指社会动乱，难再相聚。