松节油

例句：

1. 1. The traditional Chinese medicine uses pine oil as a key ingredient.
   这种传统中药使用松节油作为关键成分。
2. 2. The pine oil is extracted from the pine trees in the forest.
   这种松节油是从森林中的松树中提取出来的。
3. 3. The pine oil has been used for centuries to treat skin diseases.
   这种松节油被用于治疗皮肤疾病数百年。