cecitas

例句：

1. 1. The cactus is a unique plant that can survive in extreme conditions.
   这种仙人掌是一种能在极端条件下生存的独特植物。
2. 2. The cactus has a thick, leathery skin that protects it from the sun.
   这种仙人掌有一层厚厚的皮革状皮肤，能保护它免受阳光的伤害。
3. 3. The cactus's spines are sharp and can be used for defense or as tools.
   仙人掌的刺是尖锐的，可以用来防御或作为工具。