æ¼å¤çååæ¯ï¼ï¼çç»æ
å°çèªè½¬
åæï¼å¤©æå¦ä¸ææ¼åçåå¤åççåç线å«åæ¨æ线.æ¨æ线ææç»è¿ç纬线åçæ¼å¼§åå¤å¼§ç两é¨å.æ¼å¼§åå¤å¼§çé¿åº¦å°±å³å®äºä¸ä¸ªå°æ¹çæ¼å¤é¿çååååæ äºä¸å纬ååä¸æå£èçæ¼å¤ååè§å¾.
追é®æ¯æ¥å¿è¯´éçé®é¢ï¼ä½ çåçä¸å¯¹