努力

effort; endeavor; hard work; exertion; attempt; toil; diligence; striving; sweat; strive; try; struggle; try hard; work hard; strive to; exert oneself; make an effort; make great efforts; hard; diligent; hardworking; concerted; industrious; assiduous; diligently; strenuously; assiduously; with effort

变好

take a turn for the better; alter for the better; for the better; meliorate; ameliorate; change for the better