free-end

例句：

1. 1. The rope is attached to the wall at a free-end.
   绳子的一端挂在墙上。
2. 2. The project ends at a free-end.
   这个项目在自由端结束。
3. 3. The car's engine has a free-end that can be removed for maintenance.
   汽车发动机的自由端可以拆卸进行维护。