chromidial substance

例句：

1. 1. The color of the flower is due to its chromidial composition.
   花朵的颜色是由于其色素组成造成的。
2. 2.The scientist discovered a new type of chromidial substance that could be used in medicine.
   科学家发现了一种可用于医学的新色素物质。
3. 3. The chromidial substances in the plant are essential for growth and development.
   植物中的色素物质对生长和发育至关重要。