改善

(1)improve significantly; go from bad to good; "Her performance in school picked up"

(2)非常に上達する

(3)悪いものから良くなる

(4)improve by alteration or correction of errors or defects and put into a better condition; "reform the health system in this country"

(5)誤りまたは欠陥の変更か修正により改善し、より良い状態にする

(6)to make better; "The editor improved the manuscript with his changes"

(7)よりよくする

(1)