1. The plant has a brilliant purple flower.
    那棵植物开著一朵鲜艳的紫花.

2. The colour of the flower is purple.
    那些花的颜色是紫色的.

3. And she was slicing so quickly, seemingly not paying attention to her sharp chopping knife, that I was afraid the tips of her fingers would become one of the ingredients of the purple vegetable and pork dish.
    她切得很快，好像一点也不注意她手中那把锋利的切菜刀，我真害怕她的手指尖也会成为紫色蔬菜烧猪肉这门菜肴中的佐料。