He vanished without trace.

他消失得无影无踪。

《牛津词典》

Then again, the point of the report was never to create a comprehensive history of the Congo wars. It was to give a voiceto the dead who have otherwise dissolved without trace in the steaming jungle.

再者，这篇报告的宗旨并不是为了展示刚果战争史的全景，只是要为那些在热带丛林中已无踪迹可循的死者说一句公道话。

youdao

Stone does not decay, and so the tools of long ago have remained when even the bones of the men who made them have disappeared without trace.

石头不会腐烂。因此，虽然制造这些工具的人的骨头早已荡然无存，但远古时代的石器却保存至今。

youdao

He also produces the police drama about missing people called Without a Trace. And the Emmy award-winning reality TV show, The Amazing Race. Jerry Bruckheimer has won many awards during his career, including several Emmys,Oscars, Grammys and Golden Globes.

VOA: special.2010.03.12

She called on Eritrea to clarify the whereabouts of 11 MPs who disappeared without a trace in September,2001.

VOA: standard.2009.04.09

Two earlier attempts to establish an emerald exchange, in 1981 and again in 1994, sank without trace.

ECONOMIST: Colombia

"You've had a whole range of withdrawlist parties and independent candidates standing and all have sank without trace, " he said.

BBC: New EU referendum party holding first conference

Still, the book would probably have disappeared without trace were it not for the eccentric reaction of the two principals.

ECONOMIST: Rumour, tittle-tattle and gossip