The trickiest challenge for the expedition team was to find a way over the Great Wall of Vietnam, an overhanging mass of flowstone that blocked the way deep inside Hang Son Doong.
对探险队来说最棘手的挑战是找出一条翻越“越南长城”的路，这是韩松洞深处挡道的一片悬挂着的石帘。
The trickiest challenge for the expedition team was to find a way over the Great Wall of Vietnam, an overhanging mass of flowstone that blocked the way deep inside Hang Son Doong.
对探险队来说最棘手的挑战是找出一条翻越“越南长城”的路，这是韩松洞深处挡道的一片悬挂着的石帘。
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