The police are concerned for the safety of the 12-year-old boy who has been missing for three days.

那个12岁的男孩失踪三天了，警方对他的安全感到担忧。

《牛津词典》

After being reported missing for days, the 24-year-old Yale pharmacology graduate student was found dead in a research lab on Sept. 13 - the day she was supposed to be married.

9月13日，失踪数天后，24岁的耶鲁药理学研究生被发现死在了实验室里—那天应该是她结婚的日子。

youdao

After one of Britain's biggest police searches, the bodies of two ten-year-old girls missing for 17 days from their homes in Soham, Cambridgeshire, were discovered in a nearby wood.

ECONOMIST: After the deluge