The phrase "firmly trapped" is grammatically correct and can be used in written English.
It means that something or someone is firmly stuck or unable to escape. Example: The mouse was firmly trapped in the mousetrap, unable to free itself. Another example: The hiker found himself firmly trapped in the narrow canyon, surrounded by steep walls on all sides.
Water-insoluble aggregates of indigo molecules larger than the fibre pores are firmly trapped within the fabric.
But the studio has turned round matters with its $200m £120mm) sequel: all those greenbacks are now firmly trapped in Spidey's web, waiting for Hollywood to collect them as the movie drives all before it at the box office.
"We don't know how she came to be so firmly trapped, but the vet found blood and puncture wounds on her rear, injuries consistent with a dog attack, so it is possible she had been chased and was trying to escape when it happened," she added.
However, this proved to be the ship's farthest point east, as at that position she became firmly trapped in the ice and began to move slowly westward; by 10 September Karluk had retreated nearly 100 mile back towards Point Barrow.
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The Au nanoparticle was firmly trapped in all three dimensions and located at the focal point of the laser.
The limited height of the microfluidic channel of our devices supported the Coulomb potential wells in firmly trapping charged micro-particles.
The net result is that the electrons in the static magnetic field are trapped firmly and the effects on the electron orbits by the electric field are relatively small.
Every once in a while a fin would weakly, helplessly flap against the mass of his gray body trapped firmly in the sand: a futile attempt at finding comfort and ease again.
Despite accidents of birth (Illinois) and geographic relocation, Ludacris is firmly a New York nostalgist trapped in the body of an Atlanta motormouth.
He is finding himself trapped ever more firmly within a web of his own making.
