该线路海拔3700多米至5200多米，大部分属于无人区地段，交通极为不便，海拔较高且是夏季。
The line more than 3700 meters above sea level to over 5200 meters, mostly in no man's land lots, the traffic is extremely inconvenient and is at higher elevations in summer.
该线路海拔3700多米至5200多米，大部分属于无人区地段，交通极为不便，海拔较高且是夏季。
The line more than 3700 meters above sea level to over 5200 meters, mostly in no man's land lots, the traffic is extremely inconvenient and is at higher elevations in summer.
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