back knotter

例句：

1. 1. The back knotter skillfully tied the rope for me.
   背结者熟练地为我系好了绳子。
2. 2.He is a skilled back knotter who can make any type of knot.
   他是个熟练的背结者，能做任何类型的结。
3. 3. Back knotters are often used in emergency situations to secure ropes or cords.
   背结者在紧急情况下常用来绑扎绳索或绳索。