nitrate/ˈnaɪtreɪt; `naɪtret/ n[U, C]salt formed by the chemical reaction of nitric acid with an alkali, esp potassium nitrate or sodium nitrate, used as fertilizers 硝酸盐; （尤指作肥料用的）硝酸钾, 硝酸钠 soil enriched with nitrates 施硝酸盐肥料的土壤.
牛津英汉双解词典