柯林斯詞典nitrate /?na?tre?t/ (nitrates) 1. N-MASS Nitrate is a chemical compound that includes nitrogen and oxygen. Nitrates are used as fertilizers in agriculture. 硝酸鹽 High levels of nitrate occur in the Midwest because of the heavy use of fertilizers. 因爲(wèi)大量使用化肥，中西部地區(qū)的硝酸鹽含量很高。 返回 nitrate劍橋詞典a chemical that includes nitrogen and oxygen , often used as a fertilizer (= a substance that helps plants grow ) 硝酸鹽；硝酸鹽肥料 potassium /sodium nitrate 硝酸鉀／鈉 Nitrogen is converted into nitrates in the soil which plants can then use. 氮轉(zhuǎn)化爲(wèi)土壤中的硝酸鹽，可被植物吸收。 返回 nitrate