hemlock tannin

例句：

1. 1.Hemlock tannin is a natural antioxidant that helps protect the skin from damage.
   黄连素是一种天然的抗氧化剂，有助于保护皮肤免受损伤。
2. 2.The hemlock tannin in this product has been shown to have anti-inflammatory properties.
   这种产品的黄连素具有抗炎性质。
3. 3.In traditional Chinese medicine, hemlock tannin is used to treat colds and flu symptoms.
   在传统中医中，黄连素用于治疗感冒和流感症状。