anonymous
/əˈnɑnəməs/
having no known name or identity or known source
Chinese meaning: 匿名的；无名的
The donor wished to remain anonymous to avoid public attention.
捐赠者希望保持匿名以避免公众关注。
Anonymous sources revealed the details of the secret negotiation.
匿名消息来源透露了秘密谈判的细节。