pennaceous

例句：

1. 1. The rose bushes are pennaceous and canbe quite painful to touch.
   玫瑰灌木丛是多刺的，触摸时可能会很痛。
2. 2. The thorny bushes onthe edge of the forest were a challengefor the hikers.
   森林边缘的荆棘丛对徒步旅行者来说是一大挑战。
3. 3. Theprickly hedgehog is known forits ability to ward off predatorswith its spines.
   刺猬以其带刺的刺来抵御捕食者的能力而闻名。