來路不明 [来－－－]

Jyutping loi4 lou6 bat1 ming4
Pinyin lái lù bù míng

Definitions (CC-CEDICT)
  1. unidentified origin
  2. no-one knows where it comes from
  3. of dubious background
Definitions (Kaifangcidian)
  1. （沒有對應漢語詞彙）
Examples (Wiktionary)
  1. Mandarin
    来路不明
    來路不明
    lái lù bù míng
    • to be of unknown origin