The phrase "are trapped together" is correct and usable in written English.
It can be used to describe a situation where two or more entities are confined or unable to separate from each other.
Example: "The animals were caught in the net and are trapped together, unable to escape."
Alternatives: "are confined together" or "are stuck together".
Runarini and Preity are trapped together and they can hear voices, but not Shamapati's.
Time might have moved on, but Dan and the Mortland sisters are trapped together for ever.
Two wounded soldiers, one a Bosnian, the other a Serb, are trapped together in a trench (no man's land) between enemy lines.
The new celebrity reality shows make a virtue of necessity; the only stars willing to participate in shows like ABC's "Celebrity Mole Hawaii," Fox's "Second Chance," or "The Surreal Life," a WB version of MTV's "Real World" (seven fleetingly famous people are trapped together in a mansion once slept in by Glen Campbell), are those with little dignity left to lose.
Treat apparently has never left their home (not since he was very small, at least) and these two young men are trapped together.
In "The Arsenal of Freedom", Yar and Data are trapped together on the surface of the planet Minos and are attacked by a series of sentry probes which adapt to Data and Yar's phasers.
When the series ended, both actors found that they, like their characters, were trapped together, with the public unwilling to accept them in other roles.
They were trapped together in the wreckage of their apartment building for 28 hours, their arms wrapped around each other, their faces only inches apart.
"Just go, just go," because suddenly, silently, we're trapped together in this quite intimate moment where I'm being shown what to eat and I'm in my dressing gown.
Josh's surprise visit to his uncle from the family home somewhere to the west (a symbolic journey from innocence to experience) has a no-exit quality; they're trapped together, souls in a kindred torment.
Souvarine is responsible for the destruction of the mine-shaft that leads to Etienne, Catherine and Chaval being trapped together underground in a fight to the death against time, nature and sexual jealousy.
