刺猬弹

例句：

1. 1. The cactus is a desertplant that can survive in harsh conditions.
   仙人掌是一种能在恶劣条件下生存的沙漠植物。
2. 2. The cactus has sharp thorns that protect it from predators.
   仙人掌有尖锐的刺，用来保护自己免受捕食者的伤害。
3. 3. The cactus is often used as a decorativeplant in gardens.
   仙人掌常被用作花园中的装饰植物。