To reduce the length of a fall due to fatigue, loose rock or a slip.

减少疲惫时、岩块松垮时或失足时坠落的长度。

youdao

To reduce the length of a fall due to fatigue, loose rock or a slip.

减少疲惫时、岩块松垮时或失足时坠落的长度。

youdao