Leading: to ascend a climb from the bottom up, placing protection (or clipping protection) as you go.
先锋攀登：从最底处开始爬，然后一边放置(挂入)确保支点。
The road amounted to a very long climb and then a full-scale mountain pass which took over an hour to ascend.
这条路有很长的上坡路，还有一座要爬1个小时的山。
The road amounted to a very long climb and then a full-scale mountain pass which took over an hour to ascend.
这条路有很长的上坡路，还有一座要爬1个小时的山。
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