1. Anthocyanidin is a type of flavonoid that gives fruits and vegetables their red, blue, or purple color.
（类黄酮素是一种使水果和蔬菜呈现红色、蓝色或紫色的类黄酮类化合物。）

2. The presence of anthocyanidin in certain plants can have antioxidant properties and may provide health benefits.
（某些植物中存在类黄酮素可以具有抗氧化的特性，并可能对健康有益。）