improver
im'pru:vә
基本解释
n. 改良者, 改善者
[化] 改进剂; 助发剂; 助白剂
英文释义
n someone devoted to the promotion of human welfare and to social reforms
n a component that is added to something to improve it
词形变化
上一个单词：improvements to plant and equipment
下一个单词：improverishment