natural mixture of asphalt

例句：

1. 1. The naturalbeauty of the forest is breathtaking.
   森林的自然美景令人叹为观止。
2. 2. The wineis naturally aged for at least two years.
   这款酒至少自然陈年两年。
3. 3. Thescientist discovered a natural cure for cancer.
   这位科学家发现了一种治疗癌症的自然疗法。