jib sheave

例句：

1. 1.The engineer used a jib sheave to lift the heavy load.
   工程师使用绞盘来提升沉重的负载。
2. 2. The ship's crew had to use a jib sheave to navigate through the stormy seas.
   船员们不得不使用绞盘在暴风雨的海面上航行。
3. 3. The construction workers were using a jib sheave to hoist the scaffolding up high.
   建筑工人正在使用绞盘将脚手架吊起很高。