natural international law

例句：

1. 1. The natural beauty of the forest is breathtaking.
   森林的自然美景令人叹为观止。
2. 2.The scientist discovered a natural phenomenon that had never been observed before.
   科学家发现了一种从未观察到的自然现象。
3. 3.The company's products are made from natural materials and are environmentally friendly.
   该公司的产品由自然材料制成，对环境友好。