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这本书关注的是环境保护。
zhè běn shū guān zhù de shì huán jìng bǎo hù。
This book focuses on environmental protection.
我们应该遵守环保法。
wǒ men yīng gāi zūn shǒu huán bǎo fǎ。
We should abide by environmental protection laws.