Swarm species language
From Memory Alpha, the free Star Trek reference.
The Swarm species language was the highly complex language of the Swarm species, an unidentified territorial and hostile race which controlled a vast region of space in the Delta Quadrant, encountered by the crew of the USS Voyager in 2373.
The language was so complex that it proved very difficult to translate. By the time the computer and crew of Voyager managed to translate some of the language the Swarm had already attacked the ship.
This phrase that was partially translated by Ensign Kim roughly meant "Too late... Should have listened." (VOY: "The Swarm")
