凹槽具有弹性部分以方便移除建筑制品且未对至少一个钩状突起产生有害影响。
The re-entrant cavity has a resilient portion to facilitate the removal of the building product without detrimental affect to the hook-like protuberance.
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。
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.
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