plumericin

例句：

1. 1. The protein is a key component of the immune system.
   这个蛋白质是免疫系统的关键成分。
2. 2. Polymers are used in various industries for their strength and durability.
   聚合物被用于各种行业，因为它们的强度和耐用性。
3. 3.The discovery of new polymers has led to significant advancements in materials science.
   新聚合物的发现在材料科学领域取得了重大进展。