单词：pulley block
[化] 滑轮组
pulley block的用法和样例：
例句
- Crevasse rescue is one of the more complicated mountaineering techniques, sometimes requiring pulley systems and multiple haul lines.裂缝救援是一项更副复杂一些的登山技术，有时候需要滑轮组和多组拖曳绳。
- pulley滑车
- pulley-block滑轮组, 滑车组, 手拉...
- block街区
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