noun🔗Share硝石, 钾硝石. Potassium nitrate."The gardener added saltpetre to the soil to help the tomato plants grow bigger. "园丁在土壤里添加了硝石，以帮助番茄植株长得更大。compoundsubstancechemistrymaterialscienceChat with AIVocabulary GamePractice Reading
noun🔗Share硝石， 硝酸钠。 Sodium nitrate."The fertilizer used in my grandfather's vegetable garden contains saltpetre to help the plants grow stronger. "我爷爷菜园里用的肥料含有硝石（硝酸钠），能帮助蔬菜长得更壮。compoundsubstancematerialchemistryChat with AIVocabulary GamePractice Reading
