lupinin

例句：

1. 1. Lupinin is a natural pigment that can be found in the leaves of some plants.
   紫花苜蓿素是一种天然色素，存在于某些植物的叶子中。
2. 2. The color of lupinin is similar to that of violet, which makes it a popular choice for dyeing fabrics.
   紫花苜蓿素的颜色与紫色相似，这使得它成为染色织物的热门选择。
3. 3. Lupinin has been used in traditional Chinese medicine for its anti-inflammatory and antioxidant properties.
   紫花苜蓿素在传统中医中因其抗炎和抗氧化特性而得到使用。