修理和改良

修的英语翻译：

build; cobble; compile; decorate; mend; repair; trim

理的英语翻译：

manage; natural science; pay attention to; reason; texture; tidy up; truth

和的英语翻译：

and; draw; gentle; kind; mild; harmonious; mix with; sum; summation
together with
【计】 ampersand
【医】 c.; cum

改良的英语翻译：

improve; ameliorate; amend; meliorate; mend; reform
【经】 improve; improvement