lupeol

例句：

1. 1. The ancient tree that produces lupeol is considered sacred by many tribes.
   生产香胶树脂的古老树木被许多部落视为神圣。
2. 2. Lupeol is a natural resin found in the bark of certain trees.
   香胶树脂是一种自然树脂，存在于某些树木的树皮中。
3. 3. Lupeol has been used for centuries to make traditional Chinese medicines.
   香胶树脂被用于制作传统中药数百年。