使至塞上⑴单车欲问边⑵，属国过居延⑶。征蓬出汉塞⑷，归雁入胡天⑸。大漠孤烟直⑹，长河落日圆⑺。萧关逢候骑⑻，都护在燕然⑼。白话译文乘单车想去慰问边关，路经的属国...