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