绳子

例句：

1. 1. He tied a rope around the treeto keep it from falling over.
   他系了一条绳子在树上，以防它掉下来。
2. 2.The boy climbed up the rope and reachedthe top of the tree.
   那个男孩爬上了绳子，爬到了树顶。
3. 3. Thesailor used a rope to pull the boatback to safety.
   那位水手用一根绳子把船拉回安全地带。