形容词改良的

动词改善，改进，提高( improve的过去式和过去分词 ); 提高（土地、地产）的价值; 利用（机会）; 抓紧（时间）

1. 改良的：hole 洞 | improved 改良的 | general 一般的

2. 改进的：improved stability criteria 改进的稳性衡准 | improved 改进的 | improvement factor 改进系数

adj

1. become or made better in quality

e.g. was proud of his improved grades
an improved viewfinder

2. made more desirable or valuable or profitable
especially made ready for use or marketing

e.g. new houses are springing up on an improved tract of land near the river
an improved breed

3. (of land) made ready for development or agriculture by clearing of trees and brush

e.g. improved farmlands