fiexor point

例句：

1. 1. The engineer used a fiexor point to adjust the angle of the door.
   工程师使用一个铰链点来调整门的角度。
2. 2. The new design features a fiexor point that makes it easy to open and close.
   新设计有一个铰链点，使得打开和关闭变得容易。
3. 3. The construction project required careful planning around the fiexor points.
   建筑项目需要仔细规划围绕铰链点进行。