The upper body also has two small, steel, hook-like claws to sink into a carpeted wall as the robot climbs.
它的上身由2个很小的铁制钩状爪子组成用于扎入毯覆盖的墙面使机器人爬行。
2
The cockfish grow a new set of teeth as well as a mighty kype, a hook-like extension on the lower jaw, which they use to fight off other males.
年轻的雄鲑鱼长了一副新的锋利牙齿，好似在下颚下部有钩状突起一般，依靠这个，他们与同性进行争斗。
3
The re-entrant cavity has a resilient portion to facilitate the removal of the building product without detrimental affect to the hook-like protuberance.