提高信誉英语怎么说

提高信誉的英文表达为 "improve one's credibility" 或 "enhance one's reputation"。
"Credibility" 来源于拉丁语 "credibilitas"，意思是可信度、可靠性。"Reputation" 来源于拉丁语 "reputatio"，意思是名声、名誉。
例句：
"He knew that he had to improve his credibility in order to be taken seriously in the industry." (他知道他必须提高自己的信誉才能在行业中被认真对待。)
"The company has been working hard to enhance its reputation for providing high-quality products." (公司一直在努力提高其高质量产品的声誉。)