"Dear Miss/Misses" is a common Engpsh way to address a young woman or women.
The origin of "Miss" as a title can be traced back to the 16th century and it has been used as a popte form of address for unmarried women for hundreds of years.
Example sentence in Engpsh: "Dear Miss, I hope this email finds you well."
中文翻译: "亲爱的小姐，希望这封邮件让您感到良好。"