leucotrope

例句：

1. 1. The scientist discovered a new type of leucotrope that could be used to treat skin cancer.
   科学家发现了一种新的色素，可以用来治疗皮肤癌。
2. 2. The color of the flower is due to its leucotrope content.
   这种花的颜色是由于它的色素含量。
3. 3.The leucotrope in the fruit gives it its vibrant red color.
   这种水果中的色素给它带来了鲜艳的红色。