Nitrates are chemicals that occur naturally in water and the soil.
硝酸盐是水和土壤里天然存在的化学物质。
Bone meal and nitrates are common fertilizers.
粉和硝酸盐是普通的肥料。
And indeed, nitrates are found in snow around the Tunguska blast.
确实，在通古斯卡爆炸冲击波的范围内的雪中发现硝酸盐的存在。
In the UK attention was particularly focused on lead and nitrates.
在英国的注意力特别聚焦在领导和硝酸盐。
Nitrates are compounds that contain nitrogen, an element essential for life.
硝酸盐中含有氮，而氮是维持生命的必要元素。
Nitrates are compounds that contain nitrogen, an element essential for life.
硝酸盐中含有氮，而氮是维持生命的必要元素。
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