He vanished without trace.

他消失得无影无踪。

《牛津词典》

He disappears without trace and, after three years, Edgar and Catherine are married.

他消失的杳无音信，三年后，埃德加和凯瑟琳结婚了。

youdao

Some pieces sink without trace while others float, like broken meringues, on the water's surface.

有些冰块沉没在海中没了踪影，有些则漂浮在海面上，像残破的冰糕。

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