Nitrates are used as preservatives in food processing.
硝酸盐在食品加工中被用作防腐剂。
《柯林斯英汉双解大词典》
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。
《柯林斯英汉双解大词典》
Unlike other mice, mice that are genetically incapable of making these particular cells do not show elevated levels of nitrates when infected with bacteria.
