fixed pin

例句：

1. 1. The car's engine is fixed with a set of heavy metal pins.
   这辆汽车的引擎被一系列沉重的金属销钉固定。
2. 2. The door was securely fastened with a large bolt.
   门被一个大型螺栓牢固地锁住了。
3. 3.The painter used a variety of fasteners to secure the canvas.
   画家使用各种紧固件来固定画布。