carabiner

剑桥词典

an object used for attaching two things, for example by a climber for attaching a rope to a belt . It is oval or like a letter D in shape , with a part that opens and closes .
連接兩件物躰的釦（如登山釦）
I unclipped my carabiner from the rope . 我從繩索上松開了登山釦。 返回 carabiner