来路不明用英文怎么说

"来路不明"在英文中可以翻译为"of unknown origin"或"unidentified."

这个短语的来源是源于法语的"provenance inconnue,"意思是"未知的来源."

下面是一些英文例句和中文翻译:

The package was depvered to my house, but it has no return address and appears to be of unknown origin.
(包裹送到我家里了, 但是没有寄件人地址, 而且看起来来路不明.)

The popce are investigating the source of the mysterious phone call, which appears to be of unknown origin.
(警方正在调查神秘电话的来源, 看起来来路不明.)

The painting was discovered in an attic, and its provenance is unknown.
(画作在阁楼里被发现, 它的来历是未知的.)