gunwale strake

例句：

1. 1.The soldier used a gunwale strake to steady himself while firing.
   士兵在射击时用枪托来稳住自己。
2. 2. The hunter found the stock of the rifle and removed it from the tree.
   猎人找到了步枪的枪托并将其从树上取下。
3. 3. The butt of the gun was dented by the impact of the bullet.
   子弹的冲击使枪口产生了凹陷。