improved
adj. 改良的；改进过的
v. 改进；增加（improve 的过去式和过去分词）；变得更好
例句
Her service has improved.
她的发球有了提高。
《牛津词典》
The drug improved mental alertness.
这种药物提高了大脑的灵敏度。
《柯林斯英汉双解大词典》
They retrofitted the plane with improved seating.
他们在飞机上安装了经过改良的座椅。
