Intended for moving on fixed ropes (as a back-up belay), for hauling heavy loads, and as a progress capture device in hauling systems.是什么意思_Intended for moving on fixed ropes (as a back-up belay), for hauling heavy loads, and as a progress capture device in hauling systems.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句