不知去向 (bù zhī qù xiàng) — to disappear without a trace; to be nowhere to be found

Definition

Examples

• 他的钱包不知去向了，他非常着急。
  Tā de qián bāo bù zhī qù xiàng le, tā fēi cháng zháo jí.
  His wallet disappeared without a trace, and he was very worried.
• 那个小偷已经不知去向，警察还在找他。
  Nà ge xiǎo tōu yǐ jīng bù zhī qù xiàng, jǐng chá hái zài zhǎo tā.
  That thief has vanished without a trace, and the police are still looking for him.
• 自从那天以后，她就不知去向了，没有人知道她在哪里。
  Zì cóng nà tiān yǐ hòu, tā jiù bù zhī qù xiàng le, méi yǒu rén zhī dào tā zài nǎ lǐ.
  After that day, she disappeared without a trace, and no one knows where she is.