Huánjìng bǎohù shì wǒguó de yī xiàng chángqī guócè.
Environmental protection is a long-term national policy of our country.
Tips
register
Formal register, common in government documents and news. Often paired with 基本 (basic) to signal top-tier policies. The phrase 基本国策 is a fixed label for policies like family planning and environmental protection.