undocumented

剑桥词典

undocumented adjective (WITHOUT PROOF)


not supported by written proof
没有书面证明支持的
People should not stop eating fish because of some undocumented risk of cancer . 人们不应该一些并无书面证据支持的致癌风险而不再吃鱼了。

undocumented adjective (WITHOUT DOCUMENTS)


not having any documents to prove that you are living or working in a country legally
没有（在一个国家生活或工作的）合法身份文件的
undocumented immigrants /aliens /workers 没有合法文件的移民／外国人／工人 返回 undocumented