melioration的翻译，读音
英/ ˌmiːlɪəˈreɪʃən /
美/ ˌmiːljəˈreɪʃn /
释义：
n.改善
反义词
decline
同根词
meliorative adj. 改良性的；改善的meliorate vi. 改善；改良；变好 vt. 改善；改良；变好
例句
Using green Chinese cabbage as material of pot experiment, the effects of calcium magnesium phosphate and calcareousness on melioration of heavy-metal-polluted soil were studied. 采用盆栽试验方法，研究了钙镁磷肥和石灰对受Cu、Zn污染的菜园土壤的改良作用。