求翻译：澜沧江源头在青海省玉树藏族自治州杂多县吉富山，海拔5200米，地理坐标是东经94°40°52″，北纬33°45′48″。从这里算起，澜沧江的长度是4909公里。是什么意思？

Lancang River in Qinghai Province, Yushu Tibetan Autonomous Prefecture, the source of complex multi-county Ji Toyama, 5200 meters above sea, geographic coordinates are longitude 94 ° 40 ° 52 ", latitude 33 ° 45'48". From here, counting the length of the Lancang River is 4909 km.

Source of the Lancang Yushu Tibetan Autonomous Prefecture, Qinghai Province for many counties Yoshitomi mountains at an altitude is 5200 meters, geographical coordinates longitude 94 degrees 40 degrees 52 ", Latitude 33 ° 45 ' 48 ". From here, Lancang calculated from the length is 4909 kilometers.

The Lanchan River source in the Qinghai Province eucalyptus Tibetan national minority autonomous prefecture Zadoi County lucky Toyama, the elevation 5200 meters, the geographic coordinate is the east longitude 94°40°52 ", north latitude 33°45 ' 48 ".Calculates from here, Lanchan River's length is 49

Lancang River source in Zaduo County of yushu Tibetan Autonomous Prefecture in Qinghai province JI Fu Shan, 5,200 meters above sea level, and geographic coordinates are longitude 94 ° 40 ° 52 ″, latitude 33 ° 45 ' 48 ″. From here onwards, Lancang River was 4,909 kilometers in length.

Lancang River in Qinghai Province, Yushu Tibetan Autonomous Prefecture, the source of complex multi-county Ji Toyama, 5200 meters above sea, geographic coordinates are longitude 94 ° 40 ° 52 ", latitude 33 ° 45'48". From here, counting the length of the Lancang River is 4909 km.