torus knot

例句：

1. 1. The torus knot in the rope is unraveling slowly.
   绳子上的扭结正在慢慢解开。
2. 2.The torus knot was a puzzle that she couldn't solve.
   那个扭结是一个她解不开的谜。
3. 3. The torus knot on the wall was a reminder of the old times.
   墙上的那个扭结是旧时光的提醒。