unknot

例句：

1. 1. The knot in the rope was so tight that it was hard to untie.
   这根绳子上的结太紧了，很难解开。
2. 2.She untied her shoelaces and put on her shoes.
   她解开了鞋带，穿上了鞋子。
3. 3. After a long day at work, he felt relieved to unwind with a good book.
   在工作了一整天之后，他感到放松，喜欢读一本好书来放松自己。